18878131480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{52691}}^1$

素因数の和:52781

約数の個数: 96

約数和(自身を含む): 46863210960

約数和(自身を除く): 27985079480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 169, 212, 260, 265, 338, 424, 520, 530, 676, 689, 845, 1060, 1352, 1378, 1690, 2120, 2756, 3380, 3445, 5512, 6760, 6890, 8957, 13780, 17914, 27560, 35828, 44785, 52691, 71656, 89570, 105382, 179140, 210764, 263455, 358280, 421528, 526910, 684983, 1053820, 1369966, 2107640, 2739932, 2792623, 3424915, 5479864, 5585246, 6849830, 8904779, 11170492, 13699660, 13963115, 17809558, 22340984, 27399320, 27926230, 35619116, 36304099, 44523895, 55852460, 71238232, 72608198, 89047790, 111704920, 145216396, 178095580, 181520495, 290432792, 356191160, 363040990, 471953287, 726081980, 943906574, 1452163960, 1887813148, 2359766435, 3775626296, 4719532870, 9439065740, 18878131480]

約数ペア:

[(1, 18878131480), (2, 9439065740), (4, 4719532870), (5, 3775626296), (8, 2359766435), (10, 1887813148), (13, 1452163960), (20, 943906574), (26, 726081980), (40, 471953287), (52, 363040990), (53, 356191160), (65, 290432792), (104, 181520495), (106, 178095580), (130, 145216396), (169, 111704920), (212, 89047790), (260, 72608198), (265, 71238232), (338, 55852460), (424, 44523895), (520, 36304099), (530, 35619116), (676, 27926230), (689, 27399320), (845, 22340984), (1060, 17809558), (1352, 13963115), (1378, 13699660), (1690, 11170492), (2120, 8904779), (2756, 6849830), (3380, 5585246), (3445, 5479864), (5512, 3424915), (6760, 2792623), (6890, 2739932), (8957, 2107640), (13780, 1369966), (17914, 1053820), (27560, 684983), (35828, 526910), (44785, 421528), (52691, 358280), (71656, 263455), (89570, 210764), (105382, 179140)]