18870258

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 44457984

約数和(自身を除く): 25587726

約数列:

[1, 2, 3, 6, 11, 22, 23, 31, 33, 46, 62, 66, 69, 93, 138, 186, 253, 341, 401, 506, 682, 713, 759, 802, 1023, 1203, 1426, 1518, 2046, 2139, 2406, 4278, 4411, 7843, 8822, 9223, 12431, 13233, 15686, 18446, 23529, 24862, 26466, 27669, 37293, 47058, 55338, 74586, 101453, 136741, 202906, 273482, 285913, 304359, 410223, 571826, 608718, 820446, 857739, 1715478, 3145043, 6290086, 9435129, 18870258]

約数ペア:

[(1, 18870258), (2, 9435129), (3, 6290086), (6, 3145043), (11, 1715478), (22, 857739), (23, 820446), (31, 608718), (33, 571826), (46, 410223), (62, 304359), (66, 285913), (69, 273482), (93, 202906), (138, 136741), (186, 101453), (253, 74586), (341, 55338), (401, 47058), (506, 37293), (682, 27669), (713, 26466), (759, 24862), (802, 23529), (1023, 18446), (1203, 15686), (1426, 13233), (1518, 12431), (2046, 9223), (2139, 8822), (2406, 7843), (4278, 4411)]