21554572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{659}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 22686548

約数列:

[1, 2, 4, 13, 17, 26, 34, 37, 52, 68, 74, 148, 221, 442, 481, 629, 659, 884, 962, 1258, 1318, 1924, 2516, 2636, 8177, 8567, 11203, 16354, 17134, 22406, 24383, 32708, 34268, 44812, 48766, 97532, 145639, 291278, 316979, 414511, 582556, 633958, 829022, 1267916, 1658044, 5388643, 10777286, 21554572]

約数ペア:

[(1, 21554572), (2, 10777286), (4, 5388643), (13, 1658044), (17, 1267916), (26, 829022), (34, 633958), (37, 582556), (52, 414511), (68, 316979), (74, 291278), (148, 145639), (221, 97532), (442, 48766), (481, 44812), (629, 34268), (659, 32708), (884, 24383), (962, 22406), (1258, 17134), (1318, 16354), (1924, 11203), (2516, 8567), (2636, 8177)]