64428440

素因数分解:

$2^3\times 5^1\times {\mathrm{599}}^1\times {\mathrm{2689}}^1$

素因数の和:3299

約数の個数: 32

約数和(自身を含む): 145260000

約数和(自身を除く): 80831560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 599, 1198, 2396, 2689, 2995, 4792, 5378, 5990, 10756, 11980, 13445, 21512, 23960, 26890, 53780, 107560, 1610711, 3221422, 6442844, 8053555, 12885688, 16107110, 32214220, 64428440]

約数ペア:

[(1, 64428440), (2, 32214220), (4, 16107110), (5, 12885688), (8, 8053555), (10, 6442844), (20, 3221422), (40, 1610711), (599, 107560), (1198, 53780), (2396, 26890), (2689, 23960), (2995, 21512), (4792, 13445), (5378, 11980), (5990, 10756)]