28718440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 69109200

約数和(自身を除く): 40390760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 157, 170, 269, 314, 340, 538, 628, 680, 785, 1076, 1256, 1345, 1570, 2152, 2669, 2690, 3140, 4573, 5338, 5380, 6280, 9146, 10676, 10760, 13345, 18292, 21352, 22865, 26690, 36584, 42233, 45730, 53380, 84466, 91460, 106760, 168932, 182920, 211165, 337864, 422330, 717961, 844660, 1435922, 1689320, 2871844, 3589805, 5743688, 7179610, 14359220, 28718440]

約数ペア:

[(1, 28718440), (2, 14359220), (4, 7179610), (5, 5743688), (8, 3589805), (10, 2871844), (17, 1689320), (20, 1435922), (34, 844660), (40, 717961), (68, 422330), (85, 337864), (136, 211165), (157, 182920), (170, 168932), (269, 106760), (314, 91460), (340, 84466), (538, 53380), (628, 45730), (680, 42233), (785, 36584), (1076, 26690), (1256, 22865), (1345, 21352), (1570, 18292), (2152, 13345), (2669, 10760), (2690, 10676), (3140, 9146), (4573, 6280), (5338, 5380)]