20707020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 68167008

約数和(自身を除く): 47459988

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 67, 68, 85, 90, 101, 102, 134, 153, 170, 180, 201, 202, 204, 255, 268, 303, 306, 335, 340, 402, 404, 505, 510, 603, 606, 612, 670, 765, 804, 909, 1005, 1010, 1020, 1139, 1206, 1212, 1340, 1515, 1530, 1717, 1818, 2010, 2020, 2278, 2412, 3015, 3030, 3060, 3417, 3434, 3636, 4020, 4545, 4556, 5151, 5695, 6030, 6060, 6767, 6834, 6868, 8585, 9090, 10251, 10302, 11390, 12060, 13534, 13668, 15453, 17085, 17170, 18180, 20301, 20502, 20604, 22780, 25755, 27068, 30906, 33835, 34170, 34340, 40602, 41004, 51255, 51510, 60903, 61812, 67670, 68340, 77265, 81204, 101505, 102510, 103020, 115039, 121806, 135340, 154530, 203010, 205020, 230078, 243612, 304515, 309060, 345117, 406020, 460156, 575195, 609030, 690234, 1035351, 1150390, 1218060, 1380468, 1725585, 2070702, 2300780, 3451170, 4141404, 5176755, 6902340, 10353510, 20707020]

約数ペア:

[(1, 20707020), (2, 10353510), (3, 6902340), (4, 5176755), (5, 4141404), (6, 3451170), (9, 2300780), (10, 2070702), (12, 1725585), (15, 1380468), (17, 1218060), (18, 1150390), (20, 1035351), (30, 690234), (34, 609030), (36, 575195), (45, 460156), (51, 406020), (60, 345117), (67, 309060), (68, 304515), (85, 243612), (90, 230078), (101, 205020), (102, 203010), (134, 154530), (153, 135340), (170, 121806), (180, 115039), (201, 103020), (202, 102510), (204, 101505), (255, 81204), (268, 77265), (303, 68340), (306, 67670), (335, 61812), (340, 60903), (402, 51510), (404, 51255), (505, 41004), (510, 40602), (603, 34340), (606, 34170), (612, 33835), (670, 30906), (765, 27068), (804, 25755), (909, 22780), (1005, 20604), (1010, 20502), (1020, 20301), (1139, 18180), (1206, 17170), (1212, 17085), (1340, 15453), (1515, 13668), (1530, 13534), (1717, 12060), (1818, 11390), (2010, 10302), (2020, 10251), (2278, 9090), (2412, 8585), (3015, 6868), (3030, 6834), (3060, 6767), (3417, 6060), (3434, 6030), (3636, 5695), (4020, 5151), (4545, 4556)]