21212820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:422

約数の個数: 96

約数和(自身を含む): 66675840

約数和(自身を除く): 45463020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 163, 180, 241, 270, 326, 482, 489, 540, 652, 723, 815, 964, 978, 1205, 1446, 1467, 1630, 1956, 2169, 2410, 2445, 2892, 2934, 3260, 3615, 4338, 4401, 4820, 4890, 5868, 6507, 7230, 7335, 8676, 8802, 9780, 10845, 13014, 14460, 14670, 17604, 21690, 22005, 26028, 29340, 32535, 39283, 43380, 44010, 65070, 78566, 88020, 117849, 130140, 157132, 196415, 235698, 353547, 392830, 471396, 589245, 707094, 785660, 1060641, 1178490, 1414188, 1767735, 2121282, 2356980, 3535470, 4242564, 5303205, 7070940, 10606410, 21212820]

約数ペア:

[(1, 21212820), (2, 10606410), (3, 7070940), (4, 5303205), (5, 4242564), (6, 3535470), (9, 2356980), (10, 2121282), (12, 1767735), (15, 1414188), (18, 1178490), (20, 1060641), (27, 785660), (30, 707094), (36, 589245), (45, 471396), (54, 392830), (60, 353547), (90, 235698), (108, 196415), (135, 157132), (163, 130140), (180, 117849), (241, 88020), (270, 78566), (326, 65070), (482, 44010), (489, 43380), (540, 39283), (652, 32535), (723, 29340), (815, 26028), (964, 22005), (978, 21690), (1205, 17604), (1446, 14670), (1467, 14460), (1630, 13014), (1956, 10845), (2169, 9780), (2410, 8802), (2445, 8676), (2892, 7335), (2934, 7230), (3260, 6507), (3615, 5868), (4338, 4890), (4401, 4820)]