21148380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{971}}^1$

素因数の和:1008

約数の個数: 108

約数和(自身を含む): 70584696

約数和(自身を除く): 49436316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 971, 990, 1089, 1210, 1452, 1815, 1942, 1980, 2178, 2420, 2913, 3630, 3884, 4356, 4855, 5445, 5826, 7260, 8739, 9710, 10681, 10890, 11652, 14565, 17478, 19420, 21362, 21780, 29130, 32043, 34956, 42724, 43695, 53405, 58260, 64086, 87390, 96129, 106810, 117491, 128172, 160215, 174780, 192258, 213620, 234982, 320430, 352473, 384516, 469964, 480645, 587455, 640860, 704946, 961290, 1057419, 1174910, 1409892, 1762365, 1922580, 2114838, 2349820, 3524730, 4229676, 5287095, 7049460, 10574190, 21148380]

約数ペア:

[(1, 21148380), (2, 10574190), (3, 7049460), (4, 5287095), (5, 4229676), (6, 3524730), (9, 2349820), (10, 2114838), (11, 1922580), (12, 1762365), (15, 1409892), (18, 1174910), (20, 1057419), (22, 961290), (30, 704946), (33, 640860), (36, 587455), (44, 480645), (45, 469964), (55, 384516), (60, 352473), (66, 320430), (90, 234982), (99, 213620), (110, 192258), (121, 174780), (132, 160215), (165, 128172), (180, 117491), (198, 106810), (220, 96129), (242, 87390), (330, 64086), (363, 58260), (396, 53405), (484, 43695), (495, 42724), (605, 34956), (660, 32043), (726, 29130), (971, 21780), (990, 21362), (1089, 19420), (1210, 17478), (1452, 14565), (1815, 11652), (1942, 10890), (1980, 10681), (2178, 9710), (2420, 8739), (2913, 7260), (3630, 5826), (3884, 5445), (4356, 4855)]