31200520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2069}}^1$

素因数の和:2122

約数の個数: 64

約数和(自身を含む): 78246000

約数和(自身を除く): 47045480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 52, 58, 65, 104, 116, 130, 145, 232, 260, 290, 377, 520, 580, 754, 1160, 1508, 1885, 2069, 3016, 3770, 4138, 7540, 8276, 10345, 15080, 16552, 20690, 26897, 41380, 53794, 60001, 82760, 107588, 120002, 134485, 215176, 240004, 268970, 300005, 480008, 537940, 600010, 780013, 1075880, 1200020, 1560026, 2400040, 3120052, 3900065, 6240104, 7800130, 15600260, 31200520]

約数ペア:

[(1, 31200520), (2, 15600260), (4, 7800130), (5, 6240104), (8, 3900065), (10, 3120052), (13, 2400040), (20, 1560026), (26, 1200020), (29, 1075880), (40, 780013), (52, 600010), (58, 537940), (65, 480008), (104, 300005), (116, 268970), (130, 240004), (145, 215176), (232, 134485), (260, 120002), (290, 107588), (377, 82760), (520, 60001), (580, 53794), (754, 41380), (1160, 26897), (1508, 20690), (1885, 16552), (2069, 15080), (3016, 10345), (3770, 8276), (4138, 7540)]