20281590

素因数分解:

$2^1\times 3^4\times 5^1\times 7^3\times {\mathrm{73}}^1$

素因数の和:113

約数の個数: 160

約数和(自身を含む): 64468800

約数和(自身を除く): 44187210

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 73, 81, 90, 98, 105, 126, 135, 146, 147, 162, 189, 210, 219, 245, 270, 294, 315, 343, 365, 378, 405, 438, 441, 490, 511, 567, 630, 657, 686, 730, 735, 810, 882, 945, 1022, 1029, 1095, 1134, 1314, 1323, 1470, 1533, 1715, 1890, 1971, 2058, 2190, 2205, 2555, 2646, 2835, 3066, 3087, 3285, 3430, 3577, 3942, 3969, 4410, 4599, 5110, 5145, 5670, 5913, 6174, 6570, 6615, 7154, 7665, 7938, 9198, 9261, 9855, 10290, 10731, 11826, 13230, 13797, 15330, 15435, 17885, 18522, 19710, 19845, 21462, 22995, 25039, 27594, 27783, 29565, 30870, 32193, 35770, 39690, 41391, 45990, 46305, 50078, 53655, 55566, 59130, 64386, 68985, 75117, 82782, 92610, 96579, 107310, 125195, 137970, 138915, 150234, 160965, 193158, 206955, 225351, 250390, 277830, 289737, 321930, 375585, 413910, 450702, 482895, 579474, 676053, 751170, 965790, 1126755, 1352106, 1448685, 2028159, 2253510, 2897370, 3380265, 4056318, 6760530, 10140795, 20281590]

約数ペア:

[(1, 20281590), (2, 10140795), (3, 6760530), (5, 4056318), (6, 3380265), (7, 2897370), (9, 2253510), (10, 2028159), (14, 1448685), (15, 1352106), (18, 1126755), (21, 965790), (27, 751170), (30, 676053), (35, 579474), (42, 482895), (45, 450702), (49, 413910), (54, 375585), (63, 321930), (70, 289737), (73, 277830), (81, 250390), (90, 225351), (98, 206955), (105, 193158), (126, 160965), (135, 150234), (146, 138915), (147, 137970), (162, 125195), (189, 107310), (210, 96579), (219, 92610), (245, 82782), (270, 75117), (294, 68985), (315, 64386), (343, 59130), (365, 55566), (378, 53655), (405, 50078), (438, 46305), (441, 45990), (490, 41391), (511, 39690), (567, 35770), (630, 32193), (657, 30870), (686, 29565), (730, 27783), (735, 27594), (810, 25039), (882, 22995), (945, 21462), (1022, 19845), (1029, 19710), (1095, 18522), (1134, 17885), (1314, 15435), (1323, 15330), (1470, 13797), (1533, 13230), (1715, 11826), (1890, 10731), (1971, 10290), (2058, 9855), (2190, 9261), (2205, 9198), (2555, 7938), (2646, 7665), (2835, 7154), (3066, 6615), (3087, 6570), (3285, 6174), (3430, 5913), (3577, 5670), (3942, 5145), (3969, 5110), (4410, 4599)]