420888975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:489

約数の個数: 96

約数和(自身を含む): 807448320

約数和(自身を除く): 386559345

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 67, 75, 85, 195, 201, 221, 255, 325, 335, 379, 425, 663, 871, 975, 1005, 1105, 1137, 1139, 1275, 1675, 1895, 2613, 3315, 3417, 4355, 4927, 5025, 5525, 5685, 5695, 6443, 9475, 13065, 14781, 14807, 16575, 17085, 19329, 21775, 24635, 25393, 28425, 28475, 32215, 44421, 65325, 73905, 74035, 76179, 83759, 85425, 96645, 123175, 126965, 161075, 222105, 251277, 330109, 369525, 370175, 380895, 418795, 431681, 483225, 634825, 990327, 1110525, 1256385, 1295043, 1650545, 1904475, 2093975, 2158405, 4951635, 5611853, 6281925, 6475215, 8252725, 10792025, 16835559, 24758175, 28059265, 32376075, 84177795, 140296325, 420888975]

約数ペア:

[(1, 420888975), (3, 140296325), (5, 84177795), (13, 32376075), (15, 28059265), (17, 24758175), (25, 16835559), (39, 10792025), (51, 8252725), (65, 6475215), (67, 6281925), (75, 5611853), (85, 4951635), (195, 2158405), (201, 2093975), (221, 1904475), (255, 1650545), (325, 1295043), (335, 1256385), (379, 1110525), (425, 990327), (663, 634825), (871, 483225), (975, 431681), (1005, 418795), (1105, 380895), (1137, 370175), (1139, 369525), (1275, 330109), (1675, 251277), (1895, 222105), (2613, 161075), (3315, 126965), (3417, 123175), (4355, 96645), (4927, 85425), (5025, 83759), (5525, 76179), (5685, 74035), (5695, 73905), (6443, 65325), (9475, 44421), (13065, 32215), (14781, 28475), (14807, 28425), (16575, 25393), (17085, 24635), (19329, 21775)]