21780612

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4549}}^1$

素因数の和:4585

約数の個数: 72

約数和(自身を含む): 66248000

約数和(自身を除く): 44467388

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4549, 4788, 9098, 13647, 18196, 27294, 31843, 40941, 54588, 63686, 81882, 86431, 95529, 127372, 163764, 172862, 191058, 259293, 286587, 345724, 382116, 518586, 573174, 605017, 777879, 1037172, 1146348, 1210034, 1555758, 1815051, 2420068, 3111516, 3630102, 5445153, 7260204, 10890306, 21780612]

約数ペア:

[(1, 21780612), (2, 10890306), (3, 7260204), (4, 5445153), (6, 3630102), (7, 3111516), (9, 2420068), (12, 1815051), (14, 1555758), (18, 1210034), (19, 1146348), (21, 1037172), (28, 777879), (36, 605017), (38, 573174), (42, 518586), (57, 382116), (63, 345724), (76, 286587), (84, 259293), (114, 191058), (126, 172862), (133, 163764), (171, 127372), (228, 95529), (252, 86431), (266, 81882), (342, 63686), (399, 54588), (532, 40941), (684, 31843), (798, 27294), (1197, 18196), (1596, 13647), (2394, 9098), (4549, 4788)]