77978940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:671

約数の個数: 96

約数和(自身を含む): 236658240

約数和(自身を除く): 158679300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 257, 260, 389, 390, 514, 771, 778, 780, 1028, 1167, 1285, 1542, 1556, 1945, 2334, 2570, 3084, 3341, 3855, 3890, 4668, 5057, 5140, 5835, 6682, 7710, 7780, 10023, 10114, 11670, 13364, 15171, 15420, 16705, 20046, 20228, 23340, 25285, 30342, 33410, 40092, 50115, 50570, 60684, 66820, 75855, 99973, 100230, 101140, 151710, 199946, 200460, 299919, 303420, 399892, 499865, 599838, 999730, 1199676, 1299649, 1499595, 1999460, 2599298, 2999190, 3898947, 5198596, 5998380, 6498245, 7797894, 12996490, 15595788, 19494735, 25992980, 38989470, 77978940]

約数ペア:

[(1, 77978940), (2, 38989470), (3, 25992980), (4, 19494735), (5, 15595788), (6, 12996490), (10, 7797894), (12, 6498245), (13, 5998380), (15, 5198596), (20, 3898947), (26, 2999190), (30, 2599298), (39, 1999460), (52, 1499595), (60, 1299649), (65, 1199676), (78, 999730), (130, 599838), (156, 499865), (195, 399892), (257, 303420), (260, 299919), (389, 200460), (390, 199946), (514, 151710), (771, 101140), (778, 100230), (780, 99973), (1028, 75855), (1167, 66820), (1285, 60684), (1542, 50570), (1556, 50115), (1945, 40092), (2334, 33410), (2570, 30342), (3084, 25285), (3341, 23340), (3855, 20228), (3890, 20046), (4668, 16705), (5057, 15420), (5140, 15171), (5835, 13364), (6682, 11670), (7710, 10114), (7780, 10023)]