19388356

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 40582080

約数和(自身を除く): 21193724

約数列:

[1, 2, 4, 13, 23, 26, 29, 43, 46, 52, 58, 86, 92, 116, 169, 172, 299, 338, 377, 559, 598, 667, 676, 754, 989, 1118, 1196, 1247, 1334, 1508, 1978, 2236, 2494, 2668, 3887, 3956, 4901, 4988, 7267, 7774, 8671, 9802, 12857, 14534, 15548, 16211, 17342, 19604, 25714, 28681, 29068, 32422, 34684, 51428, 57362, 64844, 112723, 114724, 167141, 210743, 225446, 334282, 372853, 421486, 450892, 668564, 745706, 842972, 1491412, 4847089, 9694178, 19388356]

約数ペア:

[(1, 19388356), (2, 9694178), (4, 4847089), (13, 1491412), (23, 842972), (26, 745706), (29, 668564), (43, 450892), (46, 421486), (52, 372853), (58, 334282), (86, 225446), (92, 210743), (116, 167141), (169, 114724), (172, 112723), (299, 64844), (338, 57362), (377, 51428), (559, 34684), (598, 32422), (667, 29068), (676, 28681), (754, 25714), (989, 19604), (1118, 17342), (1196, 16211), (1247, 15548), (1334, 14534), (1508, 12857), (1978, 9802), (2236, 8671), (2494, 7774), (2668, 7267), (3887, 4988), (3956, 4901)]