81378180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:530

約数の個数: 144

約数和(自身を含む): 269680320

約数和(自身を除く): 188302140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 83, 90, 117, 130, 156, 166, 180, 195, 234, 249, 260, 332, 390, 415, 419, 468, 498, 585, 747, 780, 830, 838, 996, 1079, 1170, 1245, 1257, 1494, 1660, 1676, 2095, 2158, 2340, 2490, 2514, 2988, 3237, 3735, 3771, 4190, 4316, 4980, 5028, 5395, 5447, 6285, 6474, 7470, 7542, 8380, 9711, 10790, 10894, 12570, 12948, 14940, 15084, 16185, 16341, 18855, 19422, 21580, 21788, 25140, 27235, 32370, 32682, 34777, 37710, 38844, 48555, 49023, 54470, 64740, 65364, 69554, 75420, 81705, 97110, 98046, 104331, 108940, 139108, 163410, 173885, 194220, 196092, 208662, 245115, 312993, 326820, 347770, 417324, 452101, 490230, 521655, 625986, 695540, 904202, 980460, 1043310, 1251972, 1356303, 1564965, 1808404, 2086620, 2260505, 2712606, 3129930, 4068909, 4521010, 5425212, 6259860, 6781515, 8137818, 9042020, 13563030, 16275636, 20344545, 27126060, 40689090, 81378180]

約数ペア:

[(1, 81378180), (2, 40689090), (3, 27126060), (4, 20344545), (5, 16275636), (6, 13563030), (9, 9042020), (10, 8137818), (12, 6781515), (13, 6259860), (15, 5425212), (18, 4521010), (20, 4068909), (26, 3129930), (30, 2712606), (36, 2260505), (39, 2086620), (45, 1808404), (52, 1564965), (60, 1356303), (65, 1251972), (78, 1043310), (83, 980460), (90, 904202), (117, 695540), (130, 625986), (156, 521655), (166, 490230), (180, 452101), (195, 417324), (234, 347770), (249, 326820), (260, 312993), (332, 245115), (390, 208662), (415, 196092), (419, 194220), (468, 173885), (498, 163410), (585, 139108), (747, 108940), (780, 104331), (830, 98046), (838, 97110), (996, 81705), (1079, 75420), (1170, 69554), (1245, 65364), (1257, 64740), (1494, 54470), (1660, 49023), (1676, 48555), (2095, 38844), (2158, 37710), (2340, 34777), (2490, 32682), (2514, 32370), (2988, 27235), (3237, 25140), (3735, 21788), (3771, 21580), (4190, 19422), (4316, 18855), (4980, 16341), (5028, 16185), (5395, 15084), (5447, 14940), (6285, 12948), (6474, 12570), (7470, 10894), (7542, 10790), (8380, 9711)]