21913440

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:732

約数の個数: 96

約数和(自身を含む): 70108416

約数和(自身を除く): 48194976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 71, 80, 96, 120, 142, 160, 213, 240, 284, 355, 426, 480, 568, 643, 710, 852, 1065, 1136, 1286, 1420, 1704, 1929, 2130, 2272, 2572, 2840, 3215, 3408, 3858, 4260, 5144, 5680, 6430, 6816, 7716, 8520, 9645, 10288, 11360, 12860, 15432, 17040, 19290, 20576, 25720, 30864, 34080, 38580, 45653, 51440, 61728, 77160, 91306, 102880, 136959, 154320, 182612, 228265, 273918, 308640, 365224, 456530, 547836, 684795, 730448, 913060, 1095672, 1369590, 1460896, 1826120, 2191344, 2739180, 3652240, 4382688, 5478360, 7304480, 10956720, 21913440]

約数ペア:

[(1, 21913440), (2, 10956720), (3, 7304480), (4, 5478360), (5, 4382688), (6, 3652240), (8, 2739180), (10, 2191344), (12, 1826120), (15, 1460896), (16, 1369590), (20, 1095672), (24, 913060), (30, 730448), (32, 684795), (40, 547836), (48, 456530), (60, 365224), (71, 308640), (80, 273918), (96, 228265), (120, 182612), (142, 154320), (160, 136959), (213, 102880), (240, 91306), (284, 77160), (355, 61728), (426, 51440), (480, 45653), (568, 38580), (643, 34080), (710, 30864), (852, 25720), (1065, 20576), (1136, 19290), (1286, 17040), (1420, 15432), (1704, 12860), (1929, 11360), (2130, 10288), (2272, 9645), (2572, 8520), (2840, 7716), (3215, 6816), (3408, 6430), (3858, 5680), (4260, 5144)]