25420920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{571}}^1$

素因数の和:645

約数の個数: 128

約数和(自身を含む): 88957440

約数和(自身を除く): 63536520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 53, 56, 60, 70, 84, 105, 106, 120, 140, 159, 168, 210, 212, 265, 280, 318, 371, 420, 424, 530, 571, 636, 742, 795, 840, 1060, 1113, 1142, 1272, 1484, 1590, 1713, 1855, 2120, 2226, 2284, 2855, 2968, 3180, 3426, 3710, 3997, 4452, 4568, 5565, 5710, 6360, 6852, 7420, 7994, 8565, 8904, 11130, 11420, 11991, 13704, 14840, 15988, 17130, 19985, 22260, 22840, 23982, 30263, 31976, 34260, 39970, 44520, 47964, 59955, 60526, 68520, 79940, 90789, 95928, 119910, 121052, 151315, 159880, 181578, 211841, 239820, 242104, 302630, 363156, 423682, 453945, 479640, 605260, 635523, 726312, 847364, 907890, 1059205, 1210520, 1271046, 1694728, 1815780, 2118410, 2542092, 3177615, 3631560, 4236820, 5084184, 6355230, 8473640, 12710460, 25420920]

約数ペア:

[(1, 25420920), (2, 12710460), (3, 8473640), (4, 6355230), (5, 5084184), (6, 4236820), (7, 3631560), (8, 3177615), (10, 2542092), (12, 2118410), (14, 1815780), (15, 1694728), (20, 1271046), (21, 1210520), (24, 1059205), (28, 907890), (30, 847364), (35, 726312), (40, 635523), (42, 605260), (53, 479640), (56, 453945), (60, 423682), (70, 363156), (84, 302630), (105, 242104), (106, 239820), (120, 211841), (140, 181578), (159, 159880), (168, 151315), (210, 121052), (212, 119910), (265, 95928), (280, 90789), (318, 79940), (371, 68520), (420, 60526), (424, 59955), (530, 47964), (571, 44520), (636, 39970), (742, 34260), (795, 31976), (840, 30263), (1060, 23982), (1113, 22840), (1142, 22260), (1272, 19985), (1484, 17130), (1590, 15988), (1713, 14840), (1855, 13704), (2120, 11991), (2226, 11420), (2284, 11130), (2855, 8904), (2968, 8565), (3180, 7994), (3426, 7420), (3710, 6852), (3997, 6360), (4452, 5710), (4568, 5565)]