21373212

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 58630656

約数和(自身を除く): 37257444

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 163, 196, 223, 294, 326, 446, 489, 588, 652, 669, 892, 978, 1141, 1338, 1561, 1956, 2282, 2676, 3122, 3423, 4564, 4683, 6244, 6846, 7987, 9366, 10927, 13692, 15974, 18732, 21854, 23961, 31948, 32781, 36349, 43708, 47922, 65562, 72698, 95844, 109047, 131124, 145396, 218094, 254443, 436188, 508886, 763329, 1017772, 1526658, 1781101, 3053316, 3562202, 5343303, 7124404, 10686606, 21373212]

約数ペア:

[(1, 21373212), (2, 10686606), (3, 7124404), (4, 5343303), (6, 3562202), (7, 3053316), (12, 1781101), (14, 1526658), (21, 1017772), (28, 763329), (42, 508886), (49, 436188), (84, 254443), (98, 218094), (147, 145396), (163, 131124), (196, 109047), (223, 95844), (294, 72698), (326, 65562), (446, 47922), (489, 43708), (588, 36349), (652, 32781), (669, 31948), (892, 23961), (978, 21854), (1141, 18732), (1338, 15974), (1561, 13692), (1956, 10927), (2282, 9366), (2676, 7987), (3122, 6846), (3423, 6244), (4564, 4683)]