72690040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^3\times {\mathrm{61}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 171774720

約数和(自身を除く): 99084680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 488, 610, 620, 961, 1220, 1240, 1891, 1922, 2440, 3782, 3844, 4805, 7564, 7688, 9455, 9610, 15128, 18910, 19220, 29791, 37820, 38440, 58621, 59582, 75640, 117242, 119164, 148955, 234484, 238328, 293105, 297910, 468968, 586210, 595820, 1172420, 1191640, 1817251, 2344840, 3634502, 7269004, 9086255, 14538008, 18172510, 36345020, 72690040]

約数ペア:

[(1, 72690040), (2, 36345020), (4, 18172510), (5, 14538008), (8, 9086255), (10, 7269004), (20, 3634502), (31, 2344840), (40, 1817251), (61, 1191640), (62, 1172420), (122, 595820), (124, 586210), (155, 468968), (244, 297910), (248, 293105), (305, 238328), (310, 234484), (488, 148955), (610, 119164), (620, 117242), (961, 75640), (1220, 59582), (1240, 58621), (1891, 38440), (1922, 37820), (2440, 29791), (3782, 19220), (3844, 18910), (4805, 15128), (7564, 9610), (7688, 9455)]