281130320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113359}}^1$

素因数の和:113403

約数の個数: 40

約数和(自身を含む): 674718720

約数和(自身を除く): 393588400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 113359, 226718, 453436, 566795, 906872, 1133590, 1813744, 2267180, 3514129, 4534360, 7028258, 9068720, 14056516, 17570645, 28113032, 35141290, 56226064, 70282580, 140565160, 281130320]

約数ペア:

[(1, 281130320), (2, 140565160), (4, 70282580), (5, 56226064), (8, 35141290), (10, 28113032), (16, 17570645), (20, 14056516), (31, 9068720), (40, 7028258), (62, 4534360), (80, 3514129), (124, 2267180), (155, 1813744), (248, 1133590), (310, 906872), (496, 566795), (620, 453436), (1240, 226718), (2480, 113359)]