20057960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2269}}^1$

素因数の和:2310

約数の個数: 64

約数和(自身を含む): 51483600

約数和(自身を除く): 31425640

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2269, 4420, 4538, 8840, 9076, 11345, 18152, 22690, 29497, 38573, 45380, 58994, 77146, 90760, 117988, 147485, 154292, 192865, 235976, 294970, 308584, 385730, 501449, 589940, 771460, 1002898, 1179880, 1542920, 2005796, 2507245, 4011592, 5014490, 10028980, 20057960]

約数ペア:

[(1, 20057960), (2, 10028980), (4, 5014490), (5, 4011592), (8, 2507245), (10, 2005796), (13, 1542920), (17, 1179880), (20, 1002898), (26, 771460), (34, 589940), (40, 501449), (52, 385730), (65, 308584), (68, 294970), (85, 235976), (104, 192865), (130, 154292), (136, 147485), (170, 117988), (221, 90760), (260, 77146), (340, 58994), (442, 45380), (520, 38573), (680, 29497), (884, 22690), (1105, 18152), (1768, 11345), (2210, 9076), (2269, 8840), (4420, 4538)]