19789890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 52557120

約数和(自身を除く): 32767230

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 29, 30, 43, 46, 58, 69, 86, 87, 115, 129, 138, 145, 174, 215, 230, 258, 290, 345, 430, 435, 529, 645, 667, 690, 870, 989, 1058, 1247, 1290, 1334, 1587, 1978, 2001, 2494, 2645, 2967, 3174, 3335, 3741, 4002, 4945, 5290, 5934, 6235, 6670, 7482, 7935, 9890, 10005, 12470, 14835, 15341, 15870, 18705, 20010, 22747, 28681, 29670, 30682, 37410, 45494, 46023, 57362, 68241, 76705, 86043, 92046, 113735, 136482, 143405, 153410, 172086, 227470, 230115, 286810, 341205, 430215, 460230, 659663, 682410, 860430, 1319326, 1978989, 3298315, 3957978, 6596630, 9894945, 19789890]

約数ペア:

[(1, 19789890), (2, 9894945), (3, 6596630), (5, 3957978), (6, 3298315), (10, 1978989), (15, 1319326), (23, 860430), (29, 682410), (30, 659663), (43, 460230), (46, 430215), (58, 341205), (69, 286810), (86, 230115), (87, 227470), (115, 172086), (129, 153410), (138, 143405), (145, 136482), (174, 113735), (215, 92046), (230, 86043), (258, 76705), (290, 68241), (345, 57362), (430, 46023), (435, 45494), (529, 37410), (645, 30682), (667, 29670), (690, 28681), (870, 22747), (989, 20010), (1058, 18705), (1247, 15870), (1290, 15341), (1334, 14835), (1587, 12470), (1978, 10005), (2001, 9890), (2494, 7935), (2645, 7482), (2967, 6670), (3174, 6235), (3335, 5934), (3741, 5290), (4002, 4945)]