257614980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:306

約数の個数: 192

約数和(自身を含む): 856977408

約数和(自身を除く): 599362428

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 53, 60, 70, 71, 84, 105, 106, 140, 142, 159, 163, 210, 212, 213, 265, 284, 318, 326, 355, 371, 420, 426, 489, 497, 530, 636, 652, 710, 742, 795, 815, 852, 978, 994, 1060, 1065, 1113, 1141, 1420, 1484, 1491, 1590, 1630, 1855, 1956, 1988, 2130, 2226, 2282, 2445, 2485, 2982, 3180, 3260, 3423, 3710, 3763, 4260, 4452, 4564, 4890, 4970, 5565, 5705, 5964, 6846, 7420, 7455, 7526, 8639, 9780, 9940, 11130, 11289, 11410, 11573, 13692, 14910, 15052, 17115, 17278, 18815, 22260, 22578, 22820, 23146, 25917, 26341, 29820, 34230, 34556, 34719, 37630, 43195, 45156, 46292, 51834, 52682, 56445, 57865, 60473, 68460, 69438, 75260, 79023, 81011, 86390, 103668, 105364, 112890, 115730, 120946, 129585, 131705, 138876, 158046, 162022, 172780, 173595, 181419, 225780, 231460, 241892, 243033, 259170, 263410, 302365, 316092, 324044, 347190, 362838, 395115, 405055, 486066, 518340, 526820, 604730, 613369, 694380, 725676, 790230, 810110, 907095, 972132, 1209460, 1215165, 1226738, 1580460, 1620220, 1814190, 1840107, 2430330, 2453476, 3066845, 3628380, 3680214, 4293583, 4860660, 6133690, 7360428, 8587166, 9200535, 12267380, 12880749, 17174332, 18401070, 21467915, 25761498, 36802140, 42935830, 51522996, 64403745, 85871660, 128807490, 257614980]

約数ペア:

[(1, 257614980), (2, 128807490), (3, 85871660), (4, 64403745), (5, 51522996), (6, 42935830), (7, 36802140), (10, 25761498), (12, 21467915), (14, 18401070), (15, 17174332), (20, 12880749), (21, 12267380), (28, 9200535), (30, 8587166), (35, 7360428), (42, 6133690), (53, 4860660), (60, 4293583), (70, 3680214), (71, 3628380), (84, 3066845), (105, 2453476), (106, 2430330), (140, 1840107), (142, 1814190), (159, 1620220), (163, 1580460), (210, 1226738), (212, 1215165), (213, 1209460), (265, 972132), (284, 907095), (318, 810110), (326, 790230), (355, 725676), (371, 694380), (420, 613369), (426, 604730), (489, 526820), (497, 518340), (530, 486066), (636, 405055), (652, 395115), (710, 362838), (742, 347190), (795, 324044), (815, 316092), (852, 302365), (978, 263410), (994, 259170), (1060, 243033), (1065, 241892), (1113, 231460), (1141, 225780), (1420, 181419), (1484, 173595), (1491, 172780), (1590, 162022), (1630, 158046), (1855, 138876), (1956, 131705), (1988, 129585), (2130, 120946), (2226, 115730), (2282, 112890), (2445, 105364), (2485, 103668), (2982, 86390), (3180, 81011), (3260, 79023), (3423, 75260), (3710, 69438), (3763, 68460), (4260, 60473), (4452, 57865), (4564, 56445), (4890, 52682), (4970, 51834), (5565, 46292), (5705, 45156), (5964, 43195), (6846, 37630), (7420, 34719), (7455, 34556), (7526, 34230), (8639, 29820), (9780, 26341), (9940, 25917), (11130, 23146), (11289, 22820), (11410, 22578), (11573, 22260), (13692, 18815), (14910, 17278), (15052, 17115)]