840097960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{809}}^1\times {\mathrm{1997}}^1$

素因数の和:2830

約数の個数: 64

約数和(自身を含む): 2039158800

約数和(自身を除く): 1199060840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 809, 1618, 1997, 3236, 3994, 4045, 6472, 7988, 8090, 9985, 10517, 15976, 16180, 19970, 21034, 25961, 32360, 39940, 42068, 51922, 52585, 79880, 84136, 103844, 105170, 129805, 207688, 210340, 259610, 420680, 519220, 1038440, 1615573, 3231146, 6462292, 8077865, 12924584, 16155730, 21002449, 32311460, 42004898, 64622920, 84009796, 105012245, 168019592, 210024490, 420048980, 840097960]

約数ペア:

[(1, 840097960), (2, 420048980), (4, 210024490), (5, 168019592), (8, 105012245), (10, 84009796), (13, 64622920), (20, 42004898), (26, 32311460), (40, 21002449), (52, 16155730), (65, 12924584), (104, 8077865), (130, 6462292), (260, 3231146), (520, 1615573), (809, 1038440), (1618, 519220), (1997, 420680), (3236, 259610), (3994, 210340), (4045, 207688), (6472, 129805), (7988, 105170), (8090, 103844), (9985, 84136), (10517, 79880), (15976, 52585), (16180, 51922), (19970, 42068), (21034, 39940), (25961, 32360)]