280469840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{500839}}^1$

素因数の和:500859

約数の個数: 40

約数和(自身を含む): 745249920

約数和(自身を除く): 464780080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 500839, 1001678, 2003356, 2504195, 3505873, 4006712, 5008390, 7011746, 8013424, 10016780, 14023492, 17529365, 20033560, 28046984, 35058730, 40067120, 56093968, 70117460, 140234920, 280469840]

約数ペア:

[(1, 280469840), (2, 140234920), (4, 70117460), (5, 56093968), (7, 40067120), (8, 35058730), (10, 28046984), (14, 20033560), (16, 17529365), (20, 14023492), (28, 10016780), (35, 8013424), (40, 7011746), (56, 5008390), (70, 4006712), (80, 3505873), (112, 2504195), (140, 2003356), (280, 1001678), (560, 500839)]