20210911760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{75617}}^1$

素因数の和:75900

約数の個数: 80

約数和(自身を含む): 50802592176

約数和(自身を除く): 30591680416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 257, 260, 514, 520, 1028, 1040, 1285, 2056, 2570, 3341, 4112, 5140, 6682, 10280, 13364, 16705, 20560, 26728, 33410, 53456, 66820, 75617, 133640, 151234, 267280, 302468, 378085, 604936, 756170, 983021, 1209872, 1512340, 1966042, 3024680, 3932084, 4915105, 6049360, 7864168, 9830210, 15728336, 19433569, 19660420, 38867138, 39320840, 77734276, 78641680, 97167845, 155468552, 194335690, 252636397, 310937104, 388671380, 505272794, 777342760, 1010545588, 1263181985, 1554685520, 2021091176, 2526363970, 4042182352, 5052727940, 10105455880, 20210911760]

約数ペア:

[(1, 20210911760), (2, 10105455880), (4, 5052727940), (5, 4042182352), (8, 2526363970), (10, 2021091176), (13, 1554685520), (16, 1263181985), (20, 1010545588), (26, 777342760), (40, 505272794), (52, 388671380), (65, 310937104), (80, 252636397), (104, 194335690), (130, 155468552), (208, 97167845), (257, 78641680), (260, 77734276), (514, 39320840), (520, 38867138), (1028, 19660420), (1040, 19433569), (1285, 15728336), (2056, 9830210), (2570, 7864168), (3341, 6049360), (4112, 4915105), (5140, 3932084), (6682, 3024680), (10280, 1966042), (13364, 1512340), (16705, 1209872), (20560, 983021), (26728, 756170), (33410, 604936), (53456, 378085), (66820, 302468), (75617, 267280), (133640, 151234)]