19810736

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3631}}^1$

素因数の和:3681

約数の個数: 40

約数和(自身を含む): 43235328

約数和(自身を除く): 23424592

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 176, 248, 341, 496, 682, 1364, 2728, 3631, 5456, 7262, 14524, 29048, 39941, 58096, 79882, 112561, 159764, 225122, 319528, 450244, 639056, 900488, 1238171, 1800976, 2476342, 4952684, 9905368, 19810736]

約数ペア:

[(1, 19810736), (2, 9905368), (4, 4952684), (8, 2476342), (11, 1800976), (16, 1238171), (22, 900488), (31, 639056), (44, 450244), (62, 319528), (88, 225122), (124, 159764), (176, 112561), (248, 79882), (341, 58096), (496, 39941), (682, 29048), (1364, 14524), (2728, 7262), (3631, 5456)]