20695120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15217}}^1$

素因数の和:15247

約数の個数: 40

約数和(自身を含む): 50949864

約数和(自身を除く): 30254744

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15217, 30434, 60868, 76085, 121736, 152170, 243472, 258689, 304340, 517378, 608680, 1034756, 1217360, 1293445, 2069512, 2586890, 4139024, 5173780, 10347560, 20695120]

約数ペア:

[(1, 20695120), (2, 10347560), (4, 5173780), (5, 4139024), (8, 2586890), (10, 2069512), (16, 1293445), (17, 1217360), (20, 1034756), (34, 608680), (40, 517378), (68, 304340), (80, 258689), (85, 243472), (136, 152170), (170, 121736), (272, 76085), (340, 60868), (680, 30434), (1360, 15217)]