81235700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 221652480

約数和(自身を除く): 140416780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 79, 91, 100, 113, 130, 140, 158, 175, 182, 226, 260, 316, 325, 350, 364, 395, 452, 455, 553, 565, 650, 700, 790, 791, 910, 1027, 1106, 1130, 1300, 1469, 1580, 1582, 1820, 1975, 2054, 2212, 2260, 2275, 2765, 2825, 2938, 3164, 3950, 3955, 4108, 4550, 5135, 5530, 5650, 5876, 7189, 7345, 7900, 7910, 8927, 9100, 10270, 10283, 11060, 11300, 13825, 14378, 14690, 15820, 17854, 19775, 20540, 20566, 25675, 27650, 28756, 29380, 35708, 35945, 36725, 39550, 41132, 44635, 51350, 51415, 55300, 62489, 71890, 73450, 79100, 89270, 102700, 102830, 116051, 124978, 143780, 146900, 178540, 179725, 205660, 223175, 232102, 249956, 257075, 312445, 359450, 446350, 464204, 514150, 580255, 624890, 718900, 812357, 892700, 1028300, 1160510, 1249780, 1562225, 1624714, 2321020, 2901275, 3124450, 3249428, 4061785, 5802550, 6248900, 8123570, 11605100, 16247140, 20308925, 40617850, 81235700]

約数ペア:

[(1, 81235700), (2, 40617850), (4, 20308925), (5, 16247140), (7, 11605100), (10, 8123570), (13, 6248900), (14, 5802550), (20, 4061785), (25, 3249428), (26, 3124450), (28, 2901275), (35, 2321020), (50, 1624714), (52, 1562225), (65, 1249780), (70, 1160510), (79, 1028300), (91, 892700), (100, 812357), (113, 718900), (130, 624890), (140, 580255), (158, 514150), (175, 464204), (182, 446350), (226, 359450), (260, 312445), (316, 257075), (325, 249956), (350, 232102), (364, 223175), (395, 205660), (452, 179725), (455, 178540), (553, 146900), (565, 143780), (650, 124978), (700, 116051), (790, 102830), (791, 102700), (910, 89270), (1027, 79100), (1106, 73450), (1130, 71890), (1300, 62489), (1469, 55300), (1580, 51415), (1582, 51350), (1820, 44635), (1975, 41132), (2054, 39550), (2212, 36725), (2260, 35945), (2275, 35708), (2765, 29380), (2825, 28756), (2938, 27650), (3164, 25675), (3950, 20566), (3955, 20540), (4108, 19775), (4550, 17854), (5135, 15820), (5530, 14690), (5650, 14378), (5876, 13825), (7189, 11300), (7345, 11060), (7900, 10283), (7910, 10270), (8927, 9100)]