20986240

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^2\times {\mathrm{271}}^1$

素因数の和:312

約数の個数: 96

約数和(自身を含む): 55349280

約数和(自身を除く): 34363040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 220, 242, 271, 320, 352, 440, 484, 542, 605, 640, 704, 880, 968, 1084, 1210, 1355, 1408, 1760, 1936, 2168, 2420, 2710, 2981, 3520, 3872, 4336, 4840, 5420, 5962, 7040, 7744, 8672, 9680, 10840, 11924, 14905, 15488, 17344, 19360, 21680, 23848, 29810, 32791, 34688, 38720, 43360, 47696, 59620, 65582, 77440, 86720, 95392, 119240, 131164, 163955, 173440, 190784, 238480, 262328, 327910, 381568, 476960, 524656, 655820, 953920, 1049312, 1311640, 1907840, 2098624, 2623280, 4197248, 5246560, 10493120, 20986240]

約数ペア:

[(1, 20986240), (2, 10493120), (4, 5246560), (5, 4197248), (8, 2623280), (10, 2098624), (11, 1907840), (16, 1311640), (20, 1049312), (22, 953920), (32, 655820), (40, 524656), (44, 476960), (55, 381568), (64, 327910), (80, 262328), (88, 238480), (110, 190784), (121, 173440), (128, 163955), (160, 131164), (176, 119240), (220, 95392), (242, 86720), (271, 77440), (320, 65582), (352, 59620), (440, 47696), (484, 43360), (542, 38720), (605, 34688), (640, 32791), (704, 29810), (880, 23848), (968, 21680), (1084, 19360), (1210, 17344), (1355, 15488), (1408, 14905), (1760, 11924), (1936, 10840), (2168, 9680), (2420, 8672), (2710, 7744), (2981, 7040), (3520, 5962), (3872, 5420), (4336, 4840)]