18753980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1381}}^1$

素因数の和:1494

約数の個数: 48

約数和(自身を含む): 45506496

約数和(自身を除く): 26752516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1381, 1940, 2716, 2762, 3395, 5524, 6790, 6905, 9667, 13580, 13810, 19334, 27620, 38668, 48335, 96670, 133957, 193340, 267914, 535828, 669785, 937699, 1339570, 1875398, 2679140, 3750796, 4688495, 9376990, 18753980]

約数ペア:

[(1, 18753980), (2, 9376990), (4, 4688495), (5, 3750796), (7, 2679140), (10, 1875398), (14, 1339570), (20, 937699), (28, 669785), (35, 535828), (70, 267914), (97, 193340), (140, 133957), (194, 96670), (388, 48335), (485, 38668), (679, 27620), (970, 19334), (1358, 13810), (1381, 13580), (1940, 9667), (2716, 6905), (2762, 6790), (3395, 5524)]