19429420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 42688800

約数和(自身を除く): 23259380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 241, 278, 290, 482, 556, 580, 695, 964, 1205, 1390, 2410, 2780, 4031, 4820, 6989, 8062, 13978, 16124, 20155, 27956, 33499, 34945, 40310, 66998, 69890, 80620, 133996, 139780, 167495, 334990, 669980, 971471, 1942942, 3885884, 4857355, 9714710, 19429420]

約数ペア:

[(1, 19429420), (2, 9714710), (4, 4857355), (5, 3885884), (10, 1942942), (20, 971471), (29, 669980), (58, 334990), (116, 167495), (139, 139780), (145, 133996), (241, 80620), (278, 69890), (290, 66998), (482, 40310), (556, 34945), (580, 33499), (695, 27956), (964, 20155), (1205, 16124), (1390, 13978), (2410, 8062), (2780, 6989), (4031, 4820)]