278742080

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{28099}}^1$

素因数の和:28147

約数の個数: 56

約数和(自身を含む): 685190400

約数和(自身を除く): 406448320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 28099, 56198, 112396, 140495, 224792, 280990, 449584, 561980, 871069, 899168, 1123960, 1742138, 1798336, 2247920, 3484276, 4355345, 4495840, 6968552, 8710690, 8991680, 13937104, 17421380, 27874208, 34842760, 55748416, 69685520, 139371040, 278742080]

約数ペア:

[(1, 278742080), (2, 139371040), (4, 69685520), (5, 55748416), (8, 34842760), (10, 27874208), (16, 17421380), (20, 13937104), (31, 8991680), (32, 8710690), (40, 6968552), (62, 4495840), (64, 4355345), (80, 3484276), (124, 2247920), (155, 1798336), (160, 1742138), (248, 1123960), (310, 899168), (320, 871069), (496, 561980), (620, 449584), (992, 280990), (1240, 224792), (1984, 140495), (2480, 112396), (4960, 56198), (9920, 28099)]