28667440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:334

約数の個数: 80

約数和(自身を含む): 71593632

約数和(自身を除く): 42926192

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 107, 136, 170, 197, 214, 272, 340, 394, 428, 535, 680, 788, 856, 985, 1070, 1360, 1576, 1712, 1819, 1970, 2140, 3152, 3349, 3638, 3940, 4280, 6698, 7276, 7880, 8560, 9095, 13396, 14552, 15760, 16745, 18190, 21079, 26792, 29104, 33490, 36380, 42158, 53584, 66980, 72760, 84316, 105395, 133960, 145520, 168632, 210790, 267920, 337264, 358343, 421580, 716686, 843160, 1433372, 1686320, 1791715, 2866744, 3583430, 5733488, 7166860, 14333720, 28667440]

約数ペア:

[(1, 28667440), (2, 14333720), (4, 7166860), (5, 5733488), (8, 3583430), (10, 2866744), (16, 1791715), (17, 1686320), (20, 1433372), (34, 843160), (40, 716686), (68, 421580), (80, 358343), (85, 337264), (107, 267920), (136, 210790), (170, 168632), (197, 145520), (214, 133960), (272, 105395), (340, 84316), (394, 72760), (428, 66980), (535, 53584), (680, 42158), (788, 36380), (856, 33490), (985, 29104), (1070, 26792), (1360, 21079), (1576, 18190), (1712, 16745), (1819, 15760), (1970, 14552), (2140, 13396), (3152, 9095), (3349, 8560), (3638, 7880), (3940, 7276), (4280, 6698)]