28010320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1171}}^1$

素因数の和:1220

約数の個数: 80

約数和(自身を含む): 73245312

約数和(自身を除く): 45234992

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1171, 1196, 1495, 1840, 2342, 2392, 2990, 4684, 4784, 5855, 5980, 9368, 11710, 11960, 15223, 18736, 23420, 23920, 26933, 30446, 46840, 53866, 60892, 76115, 93680, 107732, 121784, 134665, 152230, 215464, 243568, 269330, 304460, 350129, 430928, 538660, 608920, 700258, 1077320, 1217840, 1400516, 1750645, 2154640, 2801032, 3501290, 5602064, 7002580, 14005160, 28010320]

約数ペア:

[(1, 28010320), (2, 14005160), (4, 7002580), (5, 5602064), (8, 3501290), (10, 2801032), (13, 2154640), (16, 1750645), (20, 1400516), (23, 1217840), (26, 1077320), (40, 700258), (46, 608920), (52, 538660), (65, 430928), (80, 350129), (92, 304460), (104, 269330), (115, 243568), (130, 215464), (184, 152230), (208, 134665), (230, 121784), (260, 107732), (299, 93680), (368, 76115), (460, 60892), (520, 53866), (598, 46840), (920, 30446), (1040, 26933), (1171, 23920), (1196, 23420), (1495, 18736), (1840, 15223), (2342, 11960), (2392, 11710), (2990, 9368), (4684, 5980), (4784, 5855)]