21320820

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 69346368

約数和(自身を除く): 48025548

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 41, 45, 54, 60, 81, 82, 90, 107, 108, 123, 135, 162, 164, 180, 205, 214, 243, 246, 270, 321, 324, 369, 405, 410, 428, 486, 492, 535, 540, 615, 642, 738, 810, 820, 963, 972, 1070, 1107, 1215, 1230, 1284, 1476, 1605, 1620, 1845, 1926, 2140, 2214, 2430, 2460, 2889, 3210, 3321, 3690, 3852, 4387, 4428, 4815, 4860, 5535, 5778, 6420, 6642, 7380, 8667, 8774, 9630, 9963, 11070, 11556, 13161, 13284, 14445, 16605, 17334, 17548, 19260, 19926, 21935, 22140, 26001, 26322, 28890, 33210, 34668, 39483, 39852, 43335, 43870, 49815, 52002, 52644, 57780, 65805, 66420, 78966, 86670, 87740, 99630, 104004, 118449, 130005, 131610, 157932, 173340, 197415, 199260, 236898, 260010, 263220, 355347, 394830, 473796, 520020, 592245, 710694, 789660, 1066041, 1184490, 1421388, 1776735, 2132082, 2368980, 3553470, 4264164, 5330205, 7106940, 10660410, 21320820]

約数ペア:

[(1, 21320820), (2, 10660410), (3, 7106940), (4, 5330205), (5, 4264164), (6, 3553470), (9, 2368980), (10, 2132082), (12, 1776735), (15, 1421388), (18, 1184490), (20, 1066041), (27, 789660), (30, 710694), (36, 592245), (41, 520020), (45, 473796), (54, 394830), (60, 355347), (81, 263220), (82, 260010), (90, 236898), (107, 199260), (108, 197415), (123, 173340), (135, 157932), (162, 131610), (164, 130005), (180, 118449), (205, 104004), (214, 99630), (243, 87740), (246, 86670), (270, 78966), (321, 66420), (324, 65805), (369, 57780), (405, 52644), (410, 52002), (428, 49815), (486, 43870), (492, 43335), (535, 39852), (540, 39483), (615, 34668), (642, 33210), (738, 28890), (810, 26322), (820, 26001), (963, 22140), (972, 21935), (1070, 19926), (1107, 19260), (1215, 17548), (1230, 17334), (1284, 16605), (1476, 14445), (1605, 13284), (1620, 13161), (1845, 11556), (1926, 11070), (2140, 9963), (2214, 9630), (2430, 8774), (2460, 8667), (2889, 7380), (3210, 6642), (3321, 6420), (3690, 5778), (3852, 5535), (4387, 4860), (4428, 4815)]