1556551780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^2\times {\mathrm{347}}^1$

素因数の和:721

約数の個数: 72

約数和(自身を含む): 3767537088

約数和(自身を除く): 2210985308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 347, 358, 694, 716, 895, 1253, 1388, 1735, 1790, 2429, 2506, 3470, 3580, 4858, 5012, 6265, 6940, 9716, 12145, 12530, 24290, 25060, 32041, 48580, 62113, 64082, 124226, 128164, 160205, 224287, 248452, 310565, 320410, 434791, 448574, 621130, 640820, 869582, 897148, 1121435, 1242260, 1739164, 2173955, 2242870, 4347910, 4485740, 8695820, 11118227, 22236454, 44472908, 55591135, 77827589, 111182270, 155655178, 222364540, 311310356, 389137945, 778275890, 1556551780]

約数ペア:

[(1, 1556551780), (2, 778275890), (4, 389137945), (5, 311310356), (7, 222364540), (10, 155655178), (14, 111182270), (20, 77827589), (28, 55591135), (35, 44472908), (70, 22236454), (140, 11118227), (179, 8695820), (347, 4485740), (358, 4347910), (694, 2242870), (716, 2173955), (895, 1739164), (1253, 1242260), (1388, 1121435), (1735, 897148), (1790, 869582), (2429, 640820), (2506, 621130), (3470, 448574), (3580, 434791), (4858, 320410), (5012, 310565), (6265, 248452), (6940, 224287), (9716, 160205), (12145, 128164), (12530, 124226), (24290, 64082), (25060, 62113), (32041, 48580)]