398702980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{15809}}^1$

素因数の和:15928

約数の個数: 48

約数和(自身を含む): 911035440

約数和(自身を除く): 512332460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 970, 1261, 1940, 2522, 5044, 6305, 12610, 15809, 25220, 31618, 63236, 79045, 158090, 205517, 316180, 411034, 822068, 1027585, 1533473, 2055170, 3066946, 4110340, 6133892, 7667365, 15334730, 19935149, 30669460, 39870298, 79740596, 99675745, 199351490, 398702980]

約数ペア:

[(1, 398702980), (2, 199351490), (4, 99675745), (5, 79740596), (10, 39870298), (13, 30669460), (20, 19935149), (26, 15334730), (52, 7667365), (65, 6133892), (97, 4110340), (130, 3066946), (194, 2055170), (260, 1533473), (388, 1027585), (485, 822068), (970, 411034), (1261, 316180), (1940, 205517), (2522, 158090), (5044, 79045), (6305, 63236), (12610, 31618), (15809, 25220)]