19663380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9931}}^1$

素因数の和:9957

約数の個数: 72

約数和(自身を含む): 65074464

約数和(自身を除く): 45411084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9931, 19862, 29793, 39724, 49655, 59586, 89379, 99310, 109241, 119172, 148965, 178758, 198620, 218482, 297930, 327723, 357516, 436964, 446895, 546205, 595860, 655446, 893790, 983169, 1092410, 1310892, 1638615, 1787580, 1966338, 2184820, 3277230, 3932676, 4915845, 6554460, 9831690, 19663380]

約数ペア:

[(1, 19663380), (2, 9831690), (3, 6554460), (4, 4915845), (5, 3932676), (6, 3277230), (9, 2184820), (10, 1966338), (11, 1787580), (12, 1638615), (15, 1310892), (18, 1092410), (20, 983169), (22, 893790), (30, 655446), (33, 595860), (36, 546205), (44, 446895), (45, 436964), (55, 357516), (60, 327723), (66, 297930), (90, 218482), (99, 198620), (110, 178758), (132, 148965), (165, 119172), (180, 109241), (198, 99310), (220, 89379), (330, 59586), (396, 49655), (495, 39724), (660, 29793), (990, 19862), (1980, 9931)]