21657036

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^2$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 55612480

約数和(自身を除く): 33955444

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 43, 47, 57, 76, 86, 94, 114, 129, 141, 172, 188, 228, 258, 282, 516, 564, 817, 893, 1634, 1786, 2021, 2209, 2451, 2679, 3268, 3572, 4042, 4418, 4902, 5358, 6063, 6627, 8084, 8836, 9804, 10716, 12126, 13254, 24252, 26508, 38399, 41971, 76798, 83942, 94987, 115197, 125913, 153596, 167884, 189974, 230394, 251826, 284961, 379948, 460788, 503652, 569922, 1139844, 1804753, 3609506, 5414259, 7219012, 10828518, 21657036]

約数ペア:

[(1, 21657036), (2, 10828518), (3, 7219012), (4, 5414259), (6, 3609506), (12, 1804753), (19, 1139844), (38, 569922), (43, 503652), (47, 460788), (57, 379948), (76, 284961), (86, 251826), (94, 230394), (114, 189974), (129, 167884), (141, 153596), (172, 125913), (188, 115197), (228, 94987), (258, 83942), (282, 76798), (516, 41971), (564, 38399), (817, 26508), (893, 24252), (1634, 13254), (1786, 12126), (2021, 10716), (2209, 9804), (2451, 8836), (2679, 8084), (3268, 6627), (3572, 6063), (4042, 5358), (4418, 4902)]