289611920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:761

約数の個数: 120

約数和(自身を含む): 753737472

約数和(自身を除く): 464125552

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 169, 208, 248, 260, 310, 338, 403, 496, 520, 620, 676, 691, 806, 845, 1040, 1240, 1352, 1382, 1612, 1690, 2015, 2480, 2704, 2764, 3224, 3380, 3455, 4030, 5239, 5528, 6448, 6760, 6910, 8060, 8983, 10478, 11056, 13520, 13820, 16120, 17966, 20956, 21421, 26195, 27640, 32240, 35932, 41912, 42842, 44915, 52390, 55280, 71864, 83824, 85684, 89830, 104780, 107105, 116779, 143728, 171368, 179660, 209560, 214210, 233558, 278473, 342736, 359320, 419120, 428420, 467116, 556946, 583895, 718640, 856840, 934232, 1113892, 1167790, 1392365, 1713680, 1868464, 2227784, 2335580, 2784730, 3620149, 4455568, 4671160, 5569460, 7240298, 9342320, 11138920, 14480596, 18100745, 22277840, 28961192, 36201490, 57922384, 72402980, 144805960, 289611920]

約数ペア:

[(1, 289611920), (2, 144805960), (4, 72402980), (5, 57922384), (8, 36201490), (10, 28961192), (13, 22277840), (16, 18100745), (20, 14480596), (26, 11138920), (31, 9342320), (40, 7240298), (52, 5569460), (62, 4671160), (65, 4455568), (80, 3620149), (104, 2784730), (124, 2335580), (130, 2227784), (155, 1868464), (169, 1713680), (208, 1392365), (248, 1167790), (260, 1113892), (310, 934232), (338, 856840), (403, 718640), (496, 583895), (520, 556946), (620, 467116), (676, 428420), (691, 419120), (806, 359320), (845, 342736), (1040, 278473), (1240, 233558), (1352, 214210), (1382, 209560), (1612, 179660), (1690, 171368), (2015, 143728), (2480, 116779), (2704, 107105), (2764, 104780), (3224, 89830), (3380, 85684), (3455, 83824), (4030, 71864), (5239, 55280), (5528, 52390), (6448, 44915), (6760, 42842), (6910, 41912), (8060, 35932), (8983, 32240), (10478, 27640), (11056, 26195), (13520, 21421), (13820, 20956), (16120, 17966)]