31801250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:157

約数の個数: 80

約数和(自身を含む): 68228160

約数和(自身を除く): 36426910

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 38, 50, 65, 95, 103, 125, 130, 190, 206, 247, 250, 325, 475, 494, 515, 625, 650, 950, 1030, 1235, 1250, 1339, 1625, 1957, 2375, 2470, 2575, 2678, 3250, 3914, 4750, 5150, 6175, 6695, 8125, 9785, 11875, 12350, 12875, 13390, 16250, 19570, 23750, 25441, 25750, 30875, 33475, 48925, 50882, 61750, 64375, 66950, 97850, 127205, 128750, 154375, 167375, 244625, 254410, 308750, 334750, 489250, 636025, 836875, 1223125, 1272050, 1673750, 2446250, 3180125, 6360250, 15900625, 31801250]

約数ペア:

[(1, 31801250), (2, 15900625), (5, 6360250), (10, 3180125), (13, 2446250), (19, 1673750), (25, 1272050), (26, 1223125), (38, 836875), (50, 636025), (65, 489250), (95, 334750), (103, 308750), (125, 254410), (130, 244625), (190, 167375), (206, 154375), (247, 128750), (250, 127205), (325, 97850), (475, 66950), (494, 64375), (515, 61750), (625, 50882), (650, 48925), (950, 33475), (1030, 30875), (1235, 25750), (1250, 25441), (1339, 23750), (1625, 19570), (1957, 16250), (2375, 13390), (2470, 12875), (2575, 12350), (2678, 11875), (3250, 9785), (3914, 8125), (4750, 6695), (5150, 6175)]