28528720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1907}}^1$

素因数の和:1948

約数の個数: 80

約数和(自身を含む): 76655808

約数和(自身を除く): 48127088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1496, 1870, 1907, 2992, 3740, 3814, 7480, 7628, 9535, 14960, 15256, 19070, 20977, 30512, 32419, 38140, 41954, 64838, 76280, 83908, 104885, 129676, 152560, 162095, 167816, 209770, 259352, 324190, 335632, 356609, 419540, 518704, 648380, 713218, 839080, 1296760, 1426436, 1678160, 1783045, 2593520, 2852872, 3566090, 5705744, 7132180, 14264360, 28528720]

約数ペア:

[(1, 28528720), (2, 14264360), (4, 7132180), (5, 5705744), (8, 3566090), (10, 2852872), (11, 2593520), (16, 1783045), (17, 1678160), (20, 1426436), (22, 1296760), (34, 839080), (40, 713218), (44, 648380), (55, 518704), (68, 419540), (80, 356609), (85, 335632), (88, 324190), (110, 259352), (136, 209770), (170, 167816), (176, 162095), (187, 152560), (220, 129676), (272, 104885), (340, 83908), (374, 76280), (440, 64838), (680, 41954), (748, 38140), (880, 32419), (935, 30512), (1360, 20977), (1496, 19070), (1870, 15256), (1907, 14960), (2992, 9535), (3740, 7628), (3814, 7480)]