20291237720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2053769}}^1$

素因数の和:2053812

約数の個数: 64

約数和(自身を含む): 51755004000

約数和(自身を除く): 31463766280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 9880, 2053769, 4107538, 8215076, 10268845, 16430152, 20537690, 26698997, 39021611, 41075380, 53397994, 78043222, 82150760, 106795988, 133494985, 156086444, 195108055, 213591976, 266989970, 312172888, 390216110, 507280943, 533979940, 780432220, 1014561886, 1067959880, 1560864440, 2029123772, 2536404715, 4058247544, 5072809430, 10145618860, 20291237720]

約数ペア:

[(1, 20291237720), (2, 10145618860), (4, 5072809430), (5, 4058247544), (8, 2536404715), (10, 2029123772), (13, 1560864440), (19, 1067959880), (20, 1014561886), (26, 780432220), (38, 533979940), (40, 507280943), (52, 390216110), (65, 312172888), (76, 266989970), (95, 213591976), (104, 195108055), (130, 156086444), (152, 133494985), (190, 106795988), (247, 82150760), (260, 78043222), (380, 53397994), (494, 41075380), (520, 39021611), (760, 26698997), (988, 20537690), (1235, 16430152), (1976, 10268845), (2470, 8215076), (4940, 4107538), (9880, 2053769)]