21294288

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:257

約数の個数: 120

約数和(自身を含む): 64544480

約数和(自身を除く): 43250192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 43, 48, 57, 72, 76, 86, 114, 129, 144, 152, 171, 172, 181, 228, 258, 304, 342, 344, 362, 387, 456, 516, 543, 684, 688, 724, 774, 817, 912, 1032, 1086, 1368, 1448, 1548, 1629, 1634, 2064, 2172, 2451, 2736, 2896, 3096, 3258, 3268, 3439, 4344, 4902, 6192, 6516, 6536, 6878, 7353, 7783, 8688, 9804, 10317, 13032, 13072, 13756, 14706, 15566, 19608, 20634, 23349, 26064, 27512, 29412, 30951, 31132, 39216, 41268, 46698, 55024, 58824, 61902, 62264, 70047, 82536, 93396, 117648, 123804, 124528, 140094, 147877, 165072, 186792, 247608, 280188, 295754, 373584, 443631, 495216, 560376, 591508, 887262, 1120752, 1183016, 1330893, 1774524, 2366032, 2661786, 3549048, 5323572, 7098096, 10647144, 21294288]

約数ペア:

[(1, 21294288), (2, 10647144), (3, 7098096), (4, 5323572), (6, 3549048), (8, 2661786), (9, 2366032), (12, 1774524), (16, 1330893), (18, 1183016), (19, 1120752), (24, 887262), (36, 591508), (38, 560376), (43, 495216), (48, 443631), (57, 373584), (72, 295754), (76, 280188), (86, 247608), (114, 186792), (129, 165072), (144, 147877), (152, 140094), (171, 124528), (172, 123804), (181, 117648), (228, 93396), (258, 82536), (304, 70047), (342, 62264), (344, 61902), (362, 58824), (387, 55024), (456, 46698), (516, 41268), (543, 39216), (684, 31132), (688, 30951), (724, 29412), (774, 27512), (817, 26064), (912, 23349), (1032, 20634), (1086, 19608), (1368, 15566), (1448, 14706), (1548, 13756), (1629, 13072), (1634, 13032), (2064, 10317), (2172, 9804), (2451, 8688), (2736, 7783), (2896, 7353), (3096, 6878), (3258, 6536), (3268, 6516), (3439, 6192), (4344, 4902)]