21888888

素因数分解:

$2^3\times 3^1\times 7^3\times {\mathrm{2659}}^1$

素因数の和:2689

約数の個数: 64

約数和(自身を含む): 63840000

約数和(自身を除く): 41951112

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 49, 56, 84, 98, 147, 168, 196, 294, 343, 392, 588, 686, 1029, 1176, 1372, 2058, 2659, 2744, 4116, 5318, 7977, 8232, 10636, 15954, 18613, 21272, 31908, 37226, 55839, 63816, 74452, 111678, 130291, 148904, 223356, 260582, 390873, 446712, 521164, 781746, 912037, 1042328, 1563492, 1824074, 2736111, 3126984, 3648148, 5472222, 7296296, 10944444, 21888888]

約数ペア:

[(1, 21888888), (2, 10944444), (3, 7296296), (4, 5472222), (6, 3648148), (7, 3126984), (8, 2736111), (12, 1824074), (14, 1563492), (21, 1042328), (24, 912037), (28, 781746), (42, 521164), (49, 446712), (56, 390873), (84, 260582), (98, 223356), (147, 148904), (168, 130291), (196, 111678), (294, 74452), (343, 63816), (392, 55839), (588, 37226), (686, 31908), (1029, 21272), (1176, 18613), (1372, 15954), (2058, 10636), (2659, 8232), (2744, 7977), (4116, 5318)]