408980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2$

素因数の和:57

約数の個数: 54

約数和(自身を含む): 1022238

約数和(自身を除く): 613258

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 169, 220, 242, 260, 286, 338, 484, 572, 605, 676, 715, 845, 1210, 1430, 1573, 1690, 1859, 2420, 2860, 3146, 3380, 3718, 6292, 7436, 7865, 9295, 15730, 18590, 20449, 31460, 37180, 40898, 81796, 102245, 204490, 408980]

約数ペア:

[(1, 408980), (2, 204490), (4, 102245), (5, 81796), (10, 40898), (11, 37180), (13, 31460), (20, 20449), (22, 18590), (26, 15730), (44, 9295), (52, 7865), (55, 7436), (65, 6292), (110, 3718), (121, 3380), (130, 3146), (143, 2860), (169, 2420), (220, 1859), (242, 1690), (260, 1573), (286, 1430), (338, 1210), (484, 845), (572, 715), (605, 676)]