19917456

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{541}}^1$

素因数の和:624

約数の個数: 80

約数和(自身を含む): 56454720

約数和(自身を除く): 36537264

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 59, 78, 104, 118, 156, 177, 208, 236, 312, 354, 472, 541, 624, 708, 767, 944, 1082, 1416, 1534, 1623, 2164, 2301, 2832, 3068, 3246, 4328, 4602, 6136, 6492, 7033, 8656, 9204, 12272, 12984, 14066, 18408, 21099, 25968, 28132, 31919, 36816, 42198, 56264, 63838, 84396, 95757, 112528, 127676, 168792, 191514, 255352, 337584, 383028, 414947, 510704, 766056, 829894, 1244841, 1532112, 1659788, 2489682, 3319576, 4979364, 6639152, 9958728, 19917456]

約数ペア:

[(1, 19917456), (2, 9958728), (3, 6639152), (4, 4979364), (6, 3319576), (8, 2489682), (12, 1659788), (13, 1532112), (16, 1244841), (24, 829894), (26, 766056), (39, 510704), (48, 414947), (52, 383028), (59, 337584), (78, 255352), (104, 191514), (118, 168792), (156, 127676), (177, 112528), (208, 95757), (236, 84396), (312, 63838), (354, 56264), (472, 42198), (541, 36816), (624, 31919), (708, 28132), (767, 25968), (944, 21099), (1082, 18408), (1416, 14066), (1534, 12984), (1623, 12272), (2164, 9204), (2301, 8656), (2832, 7033), (3068, 6492), (3246, 6136), (4328, 4602)]