20411790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{71}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 58351104

約数和(自身を除く): 37939314

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 37, 42, 70, 71, 74, 105, 111, 142, 185, 210, 213, 222, 259, 355, 370, 426, 497, 518, 555, 710, 777, 994, 1065, 1110, 1295, 1369, 1491, 1554, 2130, 2485, 2590, 2627, 2738, 2982, 3885, 4107, 4970, 5254, 6845, 7455, 7770, 7881, 8214, 9583, 13135, 13690, 14910, 15762, 18389, 19166, 20535, 26270, 28749, 36778, 39405, 41070, 47915, 55167, 57498, 78810, 91945, 95830, 97199, 110334, 143745, 183890, 194398, 275835, 287490, 291597, 485995, 551670, 583194, 680393, 971990, 1360786, 1457985, 2041179, 2915970, 3401965, 4082358, 6803930, 10205895, 20411790]

約数ペア:

[(1, 20411790), (2, 10205895), (3, 6803930), (5, 4082358), (6, 3401965), (7, 2915970), (10, 2041179), (14, 1457985), (15, 1360786), (21, 971990), (30, 680393), (35, 583194), (37, 551670), (42, 485995), (70, 291597), (71, 287490), (74, 275835), (105, 194398), (111, 183890), (142, 143745), (185, 110334), (210, 97199), (213, 95830), (222, 91945), (259, 78810), (355, 57498), (370, 55167), (426, 47915), (497, 41070), (518, 39405), (555, 36778), (710, 28749), (777, 26270), (994, 20535), (1065, 19166), (1110, 18389), (1295, 15762), (1369, 14910), (1491, 13690), (1554, 13135), (2130, 9583), (2485, 8214), (2590, 7881), (2627, 7770), (2738, 7455), (2982, 6845), (3885, 5254), (4107, 4970)]