251697680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:305

約数の個数: 160

約数和(自身を含む): 671290368

約数和(自身を除く): 419592688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 37, 40, 52, 62, 65, 74, 80, 104, 124, 130, 148, 155, 185, 208, 211, 248, 260, 296, 310, 370, 403, 422, 481, 496, 520, 592, 620, 740, 806, 844, 962, 1040, 1055, 1147, 1240, 1480, 1612, 1688, 1924, 2015, 2110, 2294, 2405, 2480, 2743, 2960, 3224, 3376, 3848, 4030, 4220, 4588, 4810, 5486, 5735, 6448, 6541, 7696, 7807, 8060, 8440, 9176, 9620, 10972, 11470, 13082, 13715, 14911, 15614, 16120, 16880, 18352, 19240, 21944, 22940, 26164, 27430, 29822, 31228, 32240, 32705, 38480, 39035, 43888, 45880, 52328, 54860, 59644, 62456, 65410, 74555, 78070, 85033, 91760, 101491, 104656, 109720, 119288, 124912, 130820, 149110, 156140, 170066, 202982, 219440, 238576, 242017, 261640, 298220, 312280, 340132, 405964, 425165, 484034, 507455, 523280, 596440, 624560, 680264, 811928, 850330, 968068, 1014910, 1192880, 1210085, 1360528, 1623856, 1700660, 1936136, 2029820, 2420170, 3146221, 3401320, 3872272, 4059640, 4840340, 6292442, 6802640, 8119280, 9680680, 12584884, 15731105, 19361360, 25169768, 31462210, 50339536, 62924420, 125848840, 251697680]

約数ペア:

[(1, 251697680), (2, 125848840), (4, 62924420), (5, 50339536), (8, 31462210), (10, 25169768), (13, 19361360), (16, 15731105), (20, 12584884), (26, 9680680), (31, 8119280), (37, 6802640), (40, 6292442), (52, 4840340), (62, 4059640), (65, 3872272), (74, 3401320), (80, 3146221), (104, 2420170), (124, 2029820), (130, 1936136), (148, 1700660), (155, 1623856), (185, 1360528), (208, 1210085), (211, 1192880), (248, 1014910), (260, 968068), (296, 850330), (310, 811928), (370, 680264), (403, 624560), (422, 596440), (481, 523280), (496, 507455), (520, 484034), (592, 425165), (620, 405964), (740, 340132), (806, 312280), (844, 298220), (962, 261640), (1040, 242017), (1055, 238576), (1147, 219440), (1240, 202982), (1480, 170066), (1612, 156140), (1688, 149110), (1924, 130820), (2015, 124912), (2110, 119288), (2294, 109720), (2405, 104656), (2480, 101491), (2743, 91760), (2960, 85033), (3224, 78070), (3376, 74555), (3848, 65410), (4030, 62456), (4220, 59644), (4588, 54860), (4810, 52328), (5486, 45880), (5735, 43888), (6448, 39035), (6541, 38480), (7696, 32705), (7807, 32240), (8060, 31228), (8440, 29822), (9176, 27430), (9620, 26164), (10972, 22940), (11470, 21944), (13082, 19240), (13715, 18352), (14911, 16880), (15614, 16120)]