31800420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 102735360

約数和(自身を除く): 70934940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 41, 45, 60, 62, 82, 90, 93, 123, 124, 139, 155, 164, 180, 186, 205, 246, 278, 279, 310, 369, 372, 410, 417, 465, 492, 556, 558, 615, 620, 695, 738, 820, 834, 930, 1116, 1230, 1251, 1271, 1390, 1395, 1476, 1668, 1845, 1860, 2085, 2460, 2502, 2542, 2780, 2790, 3690, 3813, 4170, 4309, 5004, 5084, 5580, 5699, 6255, 6355, 7380, 7626, 8340, 8618, 11398, 11439, 12510, 12710, 12927, 15252, 17097, 17236, 19065, 21545, 22796, 22878, 25020, 25420, 25854, 28495, 34194, 38130, 38781, 43090, 45756, 51291, 51708, 56990, 57195, 64635, 68388, 76260, 77562, 85485, 86180, 102582, 113980, 114390, 129270, 155124, 170970, 176669, 193905, 205164, 228780, 256455, 258540, 341940, 353338, 387810, 512910, 530007, 706676, 775620, 883345, 1025820, 1060014, 1590021, 1766690, 2120028, 2650035, 3180042, 3533380, 5300070, 6360084, 7950105, 10600140, 15900210, 31800420]

約数ペア:

[(1, 31800420), (2, 15900210), (3, 10600140), (4, 7950105), (5, 6360084), (6, 5300070), (9, 3533380), (10, 3180042), (12, 2650035), (15, 2120028), (18, 1766690), (20, 1590021), (30, 1060014), (31, 1025820), (36, 883345), (41, 775620), (45, 706676), (60, 530007), (62, 512910), (82, 387810), (90, 353338), (93, 341940), (123, 258540), (124, 256455), (139, 228780), (155, 205164), (164, 193905), (180, 176669), (186, 170970), (205, 155124), (246, 129270), (278, 114390), (279, 113980), (310, 102582), (369, 86180), (372, 85485), (410, 77562), (417, 76260), (465, 68388), (492, 64635), (556, 57195), (558, 56990), (615, 51708), (620, 51291), (695, 45756), (738, 43090), (820, 38781), (834, 38130), (930, 34194), (1116, 28495), (1230, 25854), (1251, 25420), (1271, 25020), (1390, 22878), (1395, 22796), (1476, 21545), (1668, 19065), (1845, 17236), (1860, 17097), (2085, 15252), (2460, 12927), (2502, 12710), (2542, 12510), (2780, 11439), (2790, 11398), (3690, 8618), (3813, 8340), (4170, 7626), (4309, 7380), (5004, 6355), (5084, 6255), (5580, 5699)]