253201620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1213}}^1$

素因数の和:1310

約数の個数: 144

約数和(自身を含む): 837019008

約数和(自身を除く): 583817388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 71, 84, 98, 105, 140, 142, 147, 196, 210, 213, 245, 284, 294, 355, 420, 426, 490, 497, 588, 710, 735, 852, 980, 994, 1065, 1213, 1420, 1470, 1491, 1988, 2130, 2426, 2485, 2940, 2982, 3479, 3639, 4260, 4852, 4970, 5964, 6065, 6958, 7278, 7455, 8491, 9940, 10437, 12130, 13916, 14556, 14910, 16982, 17395, 18195, 20874, 24260, 25473, 29820, 33964, 34790, 36390, 41748, 42455, 50946, 52185, 59437, 69580, 72780, 84910, 86123, 101892, 104370, 118874, 127365, 169820, 172246, 178311, 208740, 237748, 254730, 258369, 297185, 344492, 356622, 430615, 509460, 516738, 594370, 602861, 713244, 861230, 891555, 1033476, 1188740, 1205722, 1291845, 1722460, 1783110, 1808583, 2411444, 2583690, 3014305, 3566220, 3617166, 4220027, 5167380, 6028610, 7234332, 8440054, 9042915, 12057220, 12660081, 16880108, 18085830, 21100135, 25320162, 36171660, 42200270, 50640324, 63300405, 84400540, 126600810, 253201620]

約数ペア:

[(1, 253201620), (2, 126600810), (3, 84400540), (4, 63300405), (5, 50640324), (6, 42200270), (7, 36171660), (10, 25320162), (12, 21100135), (14, 18085830), (15, 16880108), (20, 12660081), (21, 12057220), (28, 9042915), (30, 8440054), (35, 7234332), (42, 6028610), (49, 5167380), (60, 4220027), (70, 3617166), (71, 3566220), (84, 3014305), (98, 2583690), (105, 2411444), (140, 1808583), (142, 1783110), (147, 1722460), (196, 1291845), (210, 1205722), (213, 1188740), (245, 1033476), (284, 891555), (294, 861230), (355, 713244), (420, 602861), (426, 594370), (490, 516738), (497, 509460), (588, 430615), (710, 356622), (735, 344492), (852, 297185), (980, 258369), (994, 254730), (1065, 237748), (1213, 208740), (1420, 178311), (1470, 172246), (1491, 169820), (1988, 127365), (2130, 118874), (2426, 104370), (2485, 101892), (2940, 86123), (2982, 84910), (3479, 72780), (3639, 69580), (4260, 59437), (4852, 52185), (4970, 50946), (5964, 42455), (6065, 41748), (6958, 36390), (7278, 34790), (7455, 33964), (8491, 29820), (9940, 25473), (10437, 24260), (12130, 20874), (13916, 18195), (14556, 17395), (14910, 16982)]