20676420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 68992560

約数和(自身を除く): 48316140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 29, 30, 34, 36, 45, 51, 58, 60, 68, 85, 87, 90, 102, 116, 145, 153, 170, 174, 180, 204, 233, 255, 261, 290, 306, 340, 348, 435, 466, 493, 510, 522, 580, 612, 699, 765, 870, 932, 986, 1020, 1044, 1165, 1305, 1398, 1479, 1530, 1740, 1972, 2097, 2330, 2465, 2610, 2796, 2958, 3060, 3495, 3961, 4194, 4437, 4660, 4930, 5220, 5916, 6757, 6990, 7395, 7922, 8388, 8874, 9860, 10485, 11883, 13514, 13980, 14790, 15844, 17748, 19805, 20271, 20970, 22185, 23766, 27028, 29580, 33785, 35649, 39610, 40542, 41940, 44370, 47532, 59415, 60813, 67570, 71298, 79220, 81084, 88740, 101355, 114869, 118830, 121626, 135140, 142596, 178245, 202710, 229738, 237660, 243252, 304065, 344607, 356490, 405420, 459476, 574345, 608130, 689214, 712980, 1033821, 1148690, 1216260, 1378428, 1723035, 2067642, 2297380, 3446070, 4135284, 5169105, 6892140, 10338210, 20676420]

約数ペア:

[(1, 20676420), (2, 10338210), (3, 6892140), (4, 5169105), (5, 4135284), (6, 3446070), (9, 2297380), (10, 2067642), (12, 1723035), (15, 1378428), (17, 1216260), (18, 1148690), (20, 1033821), (29, 712980), (30, 689214), (34, 608130), (36, 574345), (45, 459476), (51, 405420), (58, 356490), (60, 344607), (68, 304065), (85, 243252), (87, 237660), (90, 229738), (102, 202710), (116, 178245), (145, 142596), (153, 135140), (170, 121626), (174, 118830), (180, 114869), (204, 101355), (233, 88740), (255, 81084), (261, 79220), (290, 71298), (306, 67570), (340, 60813), (348, 59415), (435, 47532), (466, 44370), (493, 41940), (510, 40542), (522, 39610), (580, 35649), (612, 33785), (699, 29580), (765, 27028), (870, 23766), (932, 22185), (986, 20970), (1020, 20271), (1044, 19805), (1165, 17748), (1305, 15844), (1398, 14790), (1479, 13980), (1530, 13514), (1740, 11883), (1972, 10485), (2097, 9860), (2330, 8874), (2465, 8388), (2610, 7922), (2796, 7395), (2958, 6990), (3060, 6757), (3495, 5916), (3961, 5220), (4194, 4930), (4437, 4660)]