61212820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 131382720

約数和(自身を除く): 70169900

約数列:

[1, 2, 4, 5, 10, 20, 97, 139, 194, 227, 278, 388, 454, 485, 556, 695, 908, 970, 1135, 1390, 1940, 2270, 2780, 4540, 13483, 22019, 26966, 31553, 44038, 53932, 63106, 67415, 88076, 110095, 126212, 134830, 157765, 220190, 269660, 315530, 440380, 631060, 3060641, 6121282, 12242564, 15303205, 30606410, 61212820]

約数ペア:

[(1, 61212820), (2, 30606410), (4, 15303205), (5, 12242564), (10, 6121282), (20, 3060641), (97, 631060), (139, 440380), (194, 315530), (227, 269660), (278, 220190), (388, 157765), (454, 134830), (485, 126212), (556, 110095), (695, 88076), (908, 67415), (970, 63106), (1135, 53932), (1390, 44038), (1940, 31553), (2270, 26966), (2780, 22019), (4540, 13483)]