28520560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 71486496

約数和(自身を除く): 42965936

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 67, 68, 80, 85, 134, 136, 170, 268, 272, 313, 335, 340, 536, 626, 670, 680, 1072, 1139, 1252, 1340, 1360, 1565, 2278, 2504, 2680, 3130, 4556, 5008, 5321, 5360, 5695, 6260, 9112, 10642, 11390, 12520, 18224, 20971, 21284, 22780, 25040, 26605, 41942, 42568, 45560, 53210, 83884, 85136, 91120, 104855, 106420, 167768, 209710, 212840, 335536, 356507, 419420, 425680, 713014, 838840, 1426028, 1677680, 1782535, 2852056, 3565070, 5704112, 7130140, 14260280, 28520560]

約数ペア:

[(1, 28520560), (2, 14260280), (4, 7130140), (5, 5704112), (8, 3565070), (10, 2852056), (16, 1782535), (17, 1677680), (20, 1426028), (34, 838840), (40, 713014), (67, 425680), (68, 419420), (80, 356507), (85, 335536), (134, 212840), (136, 209710), (170, 167768), (268, 106420), (272, 104855), (313, 91120), (335, 85136), (340, 83884), (536, 53210), (626, 45560), (670, 42568), (680, 41942), (1072, 26605), (1139, 25040), (1252, 22780), (1340, 21284), (1360, 20971), (1565, 18224), (2278, 12520), (2504, 11390), (2680, 10642), (3130, 9112), (4556, 6260), (5008, 5695), (5321, 5360)]