256979580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:588

約数の個数: 192

約数和(自身を含む): 860944896

約数和(自身を除く): 603965316

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 61, 65, 66, 78, 110, 122, 130, 132, 143, 156, 165, 183, 195, 220, 244, 260, 286, 305, 330, 366, 390, 429, 491, 572, 610, 660, 671, 715, 732, 780, 793, 858, 915, 982, 1220, 1342, 1430, 1473, 1586, 1716, 1830, 1964, 2013, 2145, 2379, 2455, 2684, 2860, 2946, 3172, 3355, 3660, 3965, 4026, 4290, 4758, 4910, 5401, 5892, 6383, 6710, 7365, 7930, 8052, 8580, 8723, 9516, 9820, 10065, 10802, 11895, 12766, 13420, 14730, 15860, 16203, 17446, 19149, 20130, 21604, 23790, 25532, 26169, 27005, 29460, 29951, 31915, 32406, 34892, 38298, 40260, 43615, 47580, 52338, 54010, 59902, 63830, 64812, 70213, 76596, 81015, 87230, 89853, 95745, 104676, 108020, 119804, 127660, 130845, 140426, 149755, 162030, 174460, 179706, 191490, 210639, 261690, 280852, 299510, 324060, 329461, 351065, 359412, 382980, 389363, 421278, 449265, 523380, 599020, 658922, 702130, 778726, 842556, 898530, 988383, 1053195, 1168089, 1317844, 1404260, 1557452, 1647305, 1797060, 1946815, 1976766, 2106390, 2336178, 3294610, 3893630, 3953532, 4212780, 4282993, 4672356, 4941915, 5840445, 6589220, 7787260, 8565986, 9883830, 11680890, 12848979, 17131972, 19767660, 21414965, 23361780, 25697958, 42829930, 51395916, 64244895, 85659860, 128489790, 256979580]

約数ペア:

[(1, 256979580), (2, 128489790), (3, 85659860), (4, 64244895), (5, 51395916), (6, 42829930), (10, 25697958), (11, 23361780), (12, 21414965), (13, 19767660), (15, 17131972), (20, 12848979), (22, 11680890), (26, 9883830), (30, 8565986), (33, 7787260), (39, 6589220), (44, 5840445), (52, 4941915), (55, 4672356), (60, 4282993), (61, 4212780), (65, 3953532), (66, 3893630), (78, 3294610), (110, 2336178), (122, 2106390), (130, 1976766), (132, 1946815), (143, 1797060), (156, 1647305), (165, 1557452), (183, 1404260), (195, 1317844), (220, 1168089), (244, 1053195), (260, 988383), (286, 898530), (305, 842556), (330, 778726), (366, 702130), (390, 658922), (429, 599020), (491, 523380), (572, 449265), (610, 421278), (660, 389363), (671, 382980), (715, 359412), (732, 351065), (780, 329461), (793, 324060), (858, 299510), (915, 280852), (982, 261690), (1220, 210639), (1342, 191490), (1430, 179706), (1473, 174460), (1586, 162030), (1716, 149755), (1830, 140426), (1964, 130845), (2013, 127660), (2145, 119804), (2379, 108020), (2455, 104676), (2684, 95745), (2860, 89853), (2946, 87230), (3172, 81015), (3355, 76596), (3660, 70213), (3965, 64812), (4026, 63830), (4290, 59902), (4758, 54010), (4910, 52338), (5401, 47580), (5892, 43615), (6383, 40260), (6710, 38298), (7365, 34892), (7930, 32406), (8052, 31915), (8580, 29951), (8723, 29460), (9516, 27005), (9820, 26169), (10065, 25532), (10802, 23790), (11895, 21604), (12766, 20130), (13420, 19149), (14730, 17446), (15860, 16203)]