180995980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{26539}}^1$

素因数の和:26590

約数の個数: 48

約数和(自身を含む): 428037120

約数和(自身を除く): 247041140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 26539, 53078, 106156, 132695, 265390, 291929, 530780, 583858, 822709, 1167716, 1459645, 1645418, 2919290, 3290836, 4113545, 5838580, 8227090, 9049799, 16454180, 18099598, 36199196, 45248995, 90497990, 180995980]

約数ペア:

[(1, 180995980), (2, 90497990), (4, 45248995), (5, 36199196), (10, 18099598), (11, 16454180), (20, 9049799), (22, 8227090), (31, 5838580), (44, 4113545), (55, 3290836), (62, 2919290), (110, 1645418), (124, 1459645), (155, 1167716), (220, 822709), (310, 583858), (341, 530780), (620, 291929), (682, 265390), (1364, 132695), (1705, 106156), (3410, 53078), (6820, 26539)]