217469876

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 438286464

約数和(自身を除く): 220816588

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 71, 92, 142, 169, 197, 284, 299, 338, 394, 598, 676, 788, 923, 1196, 1633, 1846, 2561, 3266, 3692, 3887, 4531, 5122, 6532, 7774, 9062, 10244, 11999, 13987, 15548, 18124, 21229, 23998, 27974, 33293, 42458, 47996, 55948, 58903, 66586, 84916, 117806, 133172, 181831, 235612, 275977, 321701, 363662, 551954, 643402, 727324, 765739, 1103908, 1286804, 1531478, 2363803, 3062956, 4182113, 4727606, 8364226, 9455212, 16728452, 54367469, 108734938, 217469876]

約数ペア:

[(1, 217469876), (2, 108734938), (4, 54367469), (13, 16728452), (23, 9455212), (26, 8364226), (46, 4727606), (52, 4182113), (71, 3062956), (92, 2363803), (142, 1531478), (169, 1286804), (197, 1103908), (284, 765739), (299, 727324), (338, 643402), (394, 551954), (598, 363662), (676, 321701), (788, 275977), (923, 235612), (1196, 181831), (1633, 133172), (1846, 117806), (2561, 84916), (3266, 66586), (3692, 58903), (3887, 55948), (4531, 47996), (5122, 42458), (6532, 33293), (7774, 27974), (9062, 23998), (10244, 21229), (11999, 18124), (13987, 15548)]