80051920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:261

約数の個数: 120

約数和(自身を含む): 209129472

約数和(自身を除く): 129077552

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 169, 191, 208, 248, 260, 310, 338, 382, 403, 496, 520, 620, 676, 764, 806, 845, 955, 1040, 1240, 1352, 1528, 1612, 1690, 1910, 2015, 2480, 2483, 2704, 3056, 3224, 3380, 3820, 4030, 4966, 5239, 5921, 6448, 6760, 7640, 8060, 9932, 10478, 11842, 12415, 13520, 15280, 16120, 19864, 20956, 23684, 24830, 26195, 29605, 32240, 32279, 39728, 41912, 47368, 49660, 52390, 59210, 64558, 76973, 83824, 94736, 99320, 104780, 118420, 129116, 153946, 161395, 198640, 209560, 236840, 258232, 307892, 322790, 384865, 419120, 473680, 516464, 615784, 645580, 769730, 1000649, 1231568, 1291160, 1539460, 2001298, 2582320, 3078920, 4002596, 5003245, 6157840, 8005192, 10006490, 16010384, 20012980, 40025960, 80051920]

約数ペア:

[(1, 80051920), (2, 40025960), (4, 20012980), (5, 16010384), (8, 10006490), (10, 8005192), (13, 6157840), (16, 5003245), (20, 4002596), (26, 3078920), (31, 2582320), (40, 2001298), (52, 1539460), (62, 1291160), (65, 1231568), (80, 1000649), (104, 769730), (124, 645580), (130, 615784), (155, 516464), (169, 473680), (191, 419120), (208, 384865), (248, 322790), (260, 307892), (310, 258232), (338, 236840), (382, 209560), (403, 198640), (496, 161395), (520, 153946), (620, 129116), (676, 118420), (764, 104780), (806, 99320), (845, 94736), (955, 83824), (1040, 76973), (1240, 64558), (1352, 59210), (1528, 52390), (1612, 49660), (1690, 47368), (1910, 41912), (2015, 39728), (2480, 32279), (2483, 32240), (2704, 29605), (3056, 26195), (3224, 24830), (3380, 23684), (3820, 20956), (4030, 19864), (4966, 16120), (5239, 15280), (5921, 13520), (6448, 12415), (6760, 11842), (7640, 10478), (8060, 9932)]