19944656

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:627

約数の個数: 40

約数和(自身を含む): 40473600

約数和(自身を除く): 20528944

約数列:

[1, 2, 4, 8, 16, 31, 62, 79, 124, 158, 248, 316, 496, 509, 632, 1018, 1264, 2036, 2449, 4072, 4898, 8144, 9796, 15779, 19592, 31558, 39184, 40211, 63116, 80422, 126232, 160844, 252464, 321688, 643376, 1246541, 2493082, 4986164, 9972328, 19944656]

約数ペア:

[(1, 19944656), (2, 9972328), (4, 4986164), (8, 2493082), (16, 1246541), (31, 643376), (62, 321688), (79, 252464), (124, 160844), (158, 126232), (248, 80422), (316, 63116), (496, 40211), (509, 39184), (632, 31558), (1018, 19592), (1264, 15779), (2036, 9796), (2449, 8144), (4072, 4898)]