87720160

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 144

約数和(自身を含む): 238902048

約数和(自身を除く): 151181888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 80, 88, 92, 110, 115, 121, 160, 176, 184, 197, 220, 230, 242, 253, 352, 368, 394, 440, 460, 484, 506, 605, 736, 788, 880, 920, 968, 985, 1012, 1210, 1265, 1576, 1760, 1840, 1936, 1970, 2024, 2167, 2420, 2530, 2783, 3152, 3680, 3872, 3940, 4048, 4334, 4531, 4840, 5060, 5566, 6304, 7880, 8096, 8668, 9062, 9680, 10120, 10835, 11132, 13915, 15760, 17336, 18124, 19360, 20240, 21670, 22264, 22655, 23837, 27830, 31520, 34672, 36248, 40480, 43340, 44528, 45310, 47674, 49841, 55660, 69344, 72496, 86680, 89056, 90620, 95348, 99682, 111320, 119185, 144992, 173360, 181240, 190696, 199364, 222640, 238370, 249205, 346720, 362480, 381392, 398728, 445280, 476740, 498410, 548251, 724960, 762784, 797456, 953480, 996820, 1096502, 1594912, 1906960, 1993640, 2193004, 2741255, 3813920, 3987280, 4386008, 5482510, 7974560, 8772016, 10965020, 17544032, 21930040, 43860080, 87720160]

約数ペア:

[(1, 87720160), (2, 43860080), (4, 21930040), (5, 17544032), (8, 10965020), (10, 8772016), (11, 7974560), (16, 5482510), (20, 4386008), (22, 3987280), (23, 3813920), (32, 2741255), (40, 2193004), (44, 1993640), (46, 1906960), (55, 1594912), (80, 1096502), (88, 996820), (92, 953480), (110, 797456), (115, 762784), (121, 724960), (160, 548251), (176, 498410), (184, 476740), (197, 445280), (220, 398728), (230, 381392), (242, 362480), (253, 346720), (352, 249205), (368, 238370), (394, 222640), (440, 199364), (460, 190696), (484, 181240), (506, 173360), (605, 144992), (736, 119185), (788, 111320), (880, 99682), (920, 95348), (968, 90620), (985, 89056), (1012, 86680), (1210, 72496), (1265, 69344), (1576, 55660), (1760, 49841), (1840, 47674), (1936, 45310), (1970, 44528), (2024, 43340), (2167, 40480), (2420, 36248), (2530, 34672), (2783, 31520), (3152, 27830), (3680, 23837), (3872, 22655), (3940, 22264), (4048, 21670), (4334, 20240), (4531, 19360), (4840, 18124), (5060, 17336), (5566, 15760), (6304, 13915), (7880, 11132), (8096, 10835), (8668, 10120), (9062, 9680)]