80378980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2789}}^1$

素因数の和:2940

約数の個数: 48

約数和(自身を含む): 185613120

約数和(自身を除く): 105234140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 131, 220, 262, 524, 655, 1310, 1441, 2620, 2789, 2882, 5578, 5764, 7205, 11156, 13945, 14410, 27890, 28820, 30679, 55780, 61358, 122716, 153395, 306790, 365359, 613580, 730718, 1461436, 1826795, 3653590, 4018949, 7307180, 8037898, 16075796, 20094745, 40189490, 80378980]

約数ペア:

[(1, 80378980), (2, 40189490), (4, 20094745), (5, 16075796), (10, 8037898), (11, 7307180), (20, 4018949), (22, 3653590), (44, 1826795), (55, 1461436), (110, 730718), (131, 613580), (220, 365359), (262, 306790), (524, 153395), (655, 122716), (1310, 61358), (1441, 55780), (2620, 30679), (2789, 28820), (2882, 27890), (5578, 14410), (5764, 13945), (7205, 11156)]