20174721420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{145121}}^1$

素因数の和:145471

約数の個数: 96

約数和(自身を含む): 64754597376

約数和(自身を除く): 44579875956

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 331, 420, 662, 993, 1324, 1655, 1986, 2317, 3310, 3972, 4634, 4965, 6620, 6951, 9268, 9930, 11585, 13902, 19860, 23170, 27804, 34755, 46340, 69510, 139020, 145121, 290242, 435363, 580484, 725605, 870726, 1015847, 1451210, 1741452, 2031694, 2176815, 2902420, 3047541, 4063388, 4353630, 5079235, 6095082, 8707260, 10158470, 12190164, 15237705, 20316940, 30475410, 48035051, 60950820, 96070102, 144105153, 192140204, 240175255, 288210306, 336245357, 480350510, 576420612, 672490714, 720525765, 960701020, 1008736071, 1344981428, 1441051530, 1681226785, 2017472142, 2882103060, 3362453570, 4034944284, 5043680355, 6724907140, 10087360710, 20174721420]

約数ペア:

[(1, 20174721420), (2, 10087360710), (3, 6724907140), (4, 5043680355), (5, 4034944284), (6, 3362453570), (7, 2882103060), (10, 2017472142), (12, 1681226785), (14, 1441051530), (15, 1344981428), (20, 1008736071), (21, 960701020), (28, 720525765), (30, 672490714), (35, 576420612), (42, 480350510), (60, 336245357), (70, 288210306), (84, 240175255), (105, 192140204), (140, 144105153), (210, 96070102), (331, 60950820), (420, 48035051), (662, 30475410), (993, 20316940), (1324, 15237705), (1655, 12190164), (1986, 10158470), (2317, 8707260), (3310, 6095082), (3972, 5079235), (4634, 4353630), (4965, 4063388), (6620, 3047541), (6951, 2902420), (9268, 2176815), (9930, 2031694), (11585, 1741452), (13902, 1451210), (19860, 1015847), (23170, 870726), (27804, 725605), (34755, 580484), (46340, 435363), (69510, 290242), (139020, 145121)]