20020980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{653}}^1$

素因数の和:745

約数の個数: 96

約数和(自身を含む): 65044224

約数和(自身を除く): 45023244

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 73, 84, 105, 140, 146, 210, 219, 292, 365, 420, 438, 511, 653, 730, 876, 1022, 1095, 1306, 1460, 1533, 1959, 2044, 2190, 2555, 2612, 3066, 3265, 3918, 4380, 4571, 5110, 6132, 6530, 7665, 7836, 9142, 9795, 10220, 13060, 13713, 15330, 18284, 19590, 22855, 27426, 30660, 39180, 45710, 47669, 54852, 68565, 91420, 95338, 137130, 143007, 190676, 238345, 274260, 286014, 333683, 476690, 572028, 667366, 715035, 953380, 1001049, 1334732, 1430070, 1668415, 2002098, 2860140, 3336830, 4004196, 5005245, 6673660, 10010490, 20020980]

約数ペア:

[(1, 20020980), (2, 10010490), (3, 6673660), (4, 5005245), (5, 4004196), (6, 3336830), (7, 2860140), (10, 2002098), (12, 1668415), (14, 1430070), (15, 1334732), (20, 1001049), (21, 953380), (28, 715035), (30, 667366), (35, 572028), (42, 476690), (60, 333683), (70, 286014), (73, 274260), (84, 238345), (105, 190676), (140, 143007), (146, 137130), (210, 95338), (219, 91420), (292, 68565), (365, 54852), (420, 47669), (438, 45710), (511, 39180), (653, 30660), (730, 27426), (876, 22855), (1022, 19590), (1095, 18284), (1306, 15330), (1460, 13713), (1533, 13060), (1959, 10220), (2044, 9795), (2190, 9142), (2555, 7836), (2612, 7665), (3066, 6530), (3265, 6132), (3918, 5110), (4380, 4571)]