78839820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:316

約数の個数: 144

約数和(自身を含む): 251596800

約数和(自身を除く): 172756980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 71, 90, 93, 124, 142, 155, 180, 186, 199, 213, 279, 284, 310, 355, 372, 398, 426, 465, 558, 597, 620, 639, 710, 796, 852, 930, 995, 1065, 1116, 1194, 1278, 1395, 1420, 1791, 1860, 1990, 2130, 2201, 2388, 2556, 2790, 2985, 3195, 3582, 3980, 4260, 4402, 5580, 5970, 6169, 6390, 6603, 7164, 8804, 8955, 11005, 11940, 12338, 12780, 13206, 14129, 17910, 18507, 19809, 22010, 24676, 26412, 28258, 30845, 33015, 35820, 37014, 39618, 42387, 44020, 55521, 56516, 61690, 66030, 70645, 74028, 79236, 84774, 92535, 99045, 111042, 123380, 127161, 132060, 141290, 169548, 185070, 198090, 211935, 222084, 254322, 277605, 282580, 370140, 396180, 423870, 437999, 508644, 555210, 635805, 847740, 875998, 1110420, 1271610, 1313997, 1751996, 2189995, 2543220, 2627994, 3941991, 4379990, 5255988, 6569985, 7883982, 8759980, 13139970, 15767964, 19709955, 26279940, 39419910, 78839820]

約数ペア:

[(1, 78839820), (2, 39419910), (3, 26279940), (4, 19709955), (5, 15767964), (6, 13139970), (9, 8759980), (10, 7883982), (12, 6569985), (15, 5255988), (18, 4379990), (20, 3941991), (30, 2627994), (31, 2543220), (36, 2189995), (45, 1751996), (60, 1313997), (62, 1271610), (71, 1110420), (90, 875998), (93, 847740), (124, 635805), (142, 555210), (155, 508644), (180, 437999), (186, 423870), (199, 396180), (213, 370140), (279, 282580), (284, 277605), (310, 254322), (355, 222084), (372, 211935), (398, 198090), (426, 185070), (465, 169548), (558, 141290), (597, 132060), (620, 127161), (639, 123380), (710, 111042), (796, 99045), (852, 92535), (930, 84774), (995, 79236), (1065, 74028), (1116, 70645), (1194, 66030), (1278, 61690), (1395, 56516), (1420, 55521), (1791, 44020), (1860, 42387), (1990, 39618), (2130, 37014), (2201, 35820), (2388, 33015), (2556, 30845), (2790, 28258), (2985, 26412), (3195, 24676), (3582, 22010), (3980, 19809), (4260, 18507), (4402, 17910), (5580, 14129), (5970, 13206), (6169, 12780), (6390, 12338), (6603, 11940), (7164, 11005), (8804, 8955)]