1777776680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1\times {\mathrm{1873}}^1$

素因数の和:2334

約数の個数: 64

約数和(自身を含む): 4078198800

約数和(自身を除く): 2300422120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 389, 488, 610, 778, 1220, 1556, 1873, 1945, 2440, 3112, 3746, 3890, 7492, 7780, 9365, 14984, 15560, 18730, 23729, 37460, 47458, 74920, 94916, 114253, 118645, 189832, 228506, 237290, 457012, 474580, 571265, 728597, 914024, 949160, 1142530, 1457194, 2285060, 2914388, 3642985, 4570120, 5828776, 7285970, 14571940, 29143880, 44444417, 88888834, 177777668, 222222085, 355555336, 444444170, 888888340, 1777776680]

約数ペア:

[(1, 1777776680), (2, 888888340), (4, 444444170), (5, 355555336), (8, 222222085), (10, 177777668), (20, 88888834), (40, 44444417), (61, 29143880), (122, 14571940), (244, 7285970), (305, 5828776), (389, 4570120), (488, 3642985), (610, 2914388), (778, 2285060), (1220, 1457194), (1556, 1142530), (1873, 949160), (1945, 914024), (2440, 728597), (3112, 571265), (3746, 474580), (3890, 457012), (7492, 237290), (7780, 228506), (9365, 189832), (14984, 118645), (15560, 114253), (18730, 94916), (23729, 74920), (37460, 47458)]