20302640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^3\times {\mathrm{37}}^1$

素因数の和:107

約数の個数: 80

約数和(自身を含む): 51172320

約数和(自身を除く): 30869680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 361, 370, 380, 592, 703, 722, 740, 760, 1406, 1444, 1480, 1520, 1805, 2812, 2888, 2960, 3515, 3610, 5624, 5776, 6859, 7030, 7220, 11248, 13357, 13718, 14060, 14440, 26714, 27436, 28120, 28880, 34295, 53428, 54872, 56240, 66785, 68590, 106856, 109744, 133570, 137180, 213712, 253783, 267140, 274360, 507566, 534280, 548720, 1015132, 1068560, 1268915, 2030264, 2537830, 4060528, 5075660, 10151320, 20302640]

約数ペア:

[(1, 20302640), (2, 10151320), (4, 5075660), (5, 4060528), (8, 2537830), (10, 2030264), (16, 1268915), (19, 1068560), (20, 1015132), (37, 548720), (38, 534280), (40, 507566), (74, 274360), (76, 267140), (80, 253783), (95, 213712), (148, 137180), (152, 133570), (185, 109744), (190, 106856), (296, 68590), (304, 66785), (361, 56240), (370, 54872), (380, 53428), (592, 34295), (703, 28880), (722, 28120), (740, 27436), (760, 26714), (1406, 14440), (1444, 14060), (1480, 13718), (1520, 13357), (1805, 11248), (2812, 7220), (2888, 7030), (2960, 6859), (3515, 5776), (3610, 5624)]