19678140

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4049}}^1$

素因数の和:4073

約数の個数: 72

約数和(自身を含む): 61916400

約数和(自身を除く): 42238260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4049, 4860, 8098, 12147, 16196, 20245, 24294, 36441, 40490, 48588, 60735, 72882, 80980, 109323, 121470, 145764, 182205, 218646, 242940, 327969, 364410, 437292, 546615, 655938, 728820, 983907, 1093230, 1311876, 1639845, 1967814, 2186460, 3279690, 3935628, 4919535, 6559380, 9839070, 19678140]

約数ペア:

[(1, 19678140), (2, 9839070), (3, 6559380), (4, 4919535), (5, 3935628), (6, 3279690), (9, 2186460), (10, 1967814), (12, 1639845), (15, 1311876), (18, 1093230), (20, 983907), (27, 728820), (30, 655938), (36, 546615), (45, 437292), (54, 364410), (60, 327969), (81, 242940), (90, 218646), (108, 182205), (135, 145764), (162, 121470), (180, 109323), (243, 80980), (270, 72882), (324, 60735), (405, 48588), (486, 40490), (540, 36441), (810, 24294), (972, 20245), (1215, 16196), (1620, 12147), (2430, 8098), (4049, 4860)]