21257010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:464

約数の個数: 96

約数和(自身を含む): 60203520

約数和(自身を除く): 38946510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 31, 38, 45, 57, 62, 90, 93, 95, 114, 155, 171, 186, 190, 279, 285, 310, 342, 401, 465, 558, 570, 589, 802, 855, 930, 1178, 1203, 1395, 1710, 1767, 2005, 2406, 2790, 2945, 3534, 3609, 4010, 5301, 5890, 6015, 7218, 7619, 8835, 10602, 12030, 12431, 15238, 17670, 18045, 22857, 24862, 26505, 36090, 37293, 38095, 45714, 53010, 62155, 68571, 74586, 76190, 111879, 114285, 124310, 137142, 186465, 223758, 228570, 236189, 342855, 372930, 472378, 559395, 685710, 708567, 1118790, 1180945, 1417134, 2125701, 2361890, 3542835, 4251402, 7085670, 10628505, 21257010]

約数ペア:

[(1, 21257010), (2, 10628505), (3, 7085670), (5, 4251402), (6, 3542835), (9, 2361890), (10, 2125701), (15, 1417134), (18, 1180945), (19, 1118790), (30, 708567), (31, 685710), (38, 559395), (45, 472378), (57, 372930), (62, 342855), (90, 236189), (93, 228570), (95, 223758), (114, 186465), (155, 137142), (171, 124310), (186, 114285), (190, 111879), (279, 76190), (285, 74586), (310, 68571), (342, 62155), (401, 53010), (465, 45714), (558, 38095), (570, 37293), (589, 36090), (802, 26505), (855, 24862), (930, 22857), (1178, 18045), (1203, 17670), (1395, 15238), (1710, 12431), (1767, 12030), (2005, 10602), (2406, 8835), (2790, 7619), (2945, 7218), (3534, 6015), (3609, 5890), (4010, 5301)]