78889720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21673}}^1$

素因数の和:21704

約数の個数: 64

約数和(自身を含む): 218473920

約数和(自身を除く): 139584200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21673, 43346, 86692, 108365, 151711, 173384, 216730, 281749, 303422, 433460, 563498, 606844, 758555, 866920, 1126996, 1213688, 1408745, 1517110, 1972243, 2253992, 2817490, 3034220, 3944486, 5634980, 6068440, 7888972, 9861215, 11269960, 15777944, 19722430, 39444860, 78889720]

約数ペア:

[(1, 78889720), (2, 39444860), (4, 19722430), (5, 15777944), (7, 11269960), (8, 9861215), (10, 7888972), (13, 6068440), (14, 5634980), (20, 3944486), (26, 3034220), (28, 2817490), (35, 2253992), (40, 1972243), (52, 1517110), (56, 1408745), (65, 1213688), (70, 1126996), (91, 866920), (104, 758555), (130, 606844), (140, 563498), (182, 433460), (260, 303422), (280, 281749), (364, 216730), (455, 173384), (520, 151711), (728, 108365), (910, 86692), (1820, 43346), (3640, 21673)]