21054840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10321}}^1$

素因数の和:10352

約数の個数: 64

約数和(自身を含む): 66886560

約数和(自身を除く): 45831720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10321, 20642, 30963, 41284, 51605, 61926, 82568, 103210, 123852, 154815, 175457, 206420, 247704, 309630, 350914, 412840, 526371, 619260, 701828, 877285, 1052742, 1238520, 1403656, 1754570, 2105484, 2631855, 3509140, 4210968, 5263710, 7018280, 10527420, 21054840]

約数ペア:

[(1, 21054840), (2, 10527420), (3, 7018280), (4, 5263710), (5, 4210968), (6, 3509140), (8, 2631855), (10, 2105484), (12, 1754570), (15, 1403656), (17, 1238520), (20, 1052742), (24, 877285), (30, 701828), (34, 619260), (40, 526371), (51, 412840), (60, 350914), (68, 309630), (85, 247704), (102, 206420), (120, 175457), (136, 154815), (170, 123852), (204, 103210), (255, 82568), (340, 61926), (408, 51605), (510, 41284), (680, 30963), (1020, 20642), (2040, 10321)]