21675940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1$

素因数の和:110

約数の個数: 108

約数和(自身を含む): 55200852

約数和(自身を除く): 33524912

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 53, 55, 65, 106, 110, 121, 130, 143, 169, 212, 220, 242, 260, 265, 286, 338, 484, 530, 572, 583, 605, 676, 689, 715, 845, 1060, 1166, 1210, 1378, 1430, 1573, 1690, 1859, 2332, 2420, 2756, 2860, 2915, 3146, 3380, 3445, 3718, 5830, 6292, 6413, 6890, 7436, 7579, 7865, 8957, 9295, 11660, 12826, 13780, 15158, 15730, 17914, 18590, 20449, 25652, 30316, 31460, 32065, 35828, 37180, 37895, 40898, 44785, 64130, 75790, 81796, 83369, 89570, 98527, 102245, 128260, 151580, 166738, 179140, 197054, 204490, 333476, 394108, 408980, 416845, 492635, 833690, 985270, 1083797, 1667380, 1970540, 2167594, 4335188, 5418985, 10837970, 21675940]

約数ペア:

[(1, 21675940), (2, 10837970), (4, 5418985), (5, 4335188), (10, 2167594), (11, 1970540), (13, 1667380), (20, 1083797), (22, 985270), (26, 833690), (44, 492635), (52, 416845), (53, 408980), (55, 394108), (65, 333476), (106, 204490), (110, 197054), (121, 179140), (130, 166738), (143, 151580), (169, 128260), (212, 102245), (220, 98527), (242, 89570), (260, 83369), (265, 81796), (286, 75790), (338, 64130), (484, 44785), (530, 40898), (572, 37895), (583, 37180), (605, 35828), (676, 32065), (689, 31460), (715, 30316), (845, 25652), (1060, 20449), (1166, 18590), (1210, 17914), (1378, 15730), (1430, 15158), (1573, 13780), (1690, 12826), (1859, 11660), (2332, 9295), (2420, 8957), (2756, 7865), (2860, 7579), (2915, 7436), (3146, 6890), (3380, 6413), (3445, 6292), (3718, 5830)]