20187218988

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{937}}^1\times {\mathrm{8429}}^1$

素因数の和:9447

約数の個数: 72

約数和(自身を含む): 51808891680

約数和(自身を除く): 31621672692

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 937, 1278, 1874, 2556, 2811, 3748, 5622, 8429, 8433, 11244, 16858, 16866, 25287, 33716, 33732, 50574, 66527, 75861, 101148, 133054, 151722, 199581, 266108, 303444, 399162, 598459, 598743, 798324, 1196918, 1197486, 1795377, 2393836, 2394972, 3590754, 5386131, 7181508, 7897973, 10772262, 15795946, 21544524, 23693919, 31591892, 47387838, 71081757, 94775676, 142163514, 284327028, 560756083, 1121512166, 1682268249, 2243024332, 3364536498, 5046804747, 6729072996, 10093609494, 20187218988]

約数ペア:

[(1, 20187218988), (2, 10093609494), (3, 6729072996), (4, 5046804747), (6, 3364536498), (9, 2243024332), (12, 1682268249), (18, 1121512166), (36, 560756083), (71, 284327028), (142, 142163514), (213, 94775676), (284, 71081757), (426, 47387838), (639, 31591892), (852, 23693919), (937, 21544524), (1278, 15795946), (1874, 10772262), (2556, 7897973), (2811, 7181508), (3748, 5386131), (5622, 3590754), (8429, 2394972), (8433, 2393836), (11244, 1795377), (16858, 1197486), (16866, 1196918), (25287, 798324), (33716, 598743), (33732, 598459), (50574, 399162), (66527, 303444), (75861, 266108), (101148, 199581), (133054, 151722)]