20452860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{83}}^1$

素因数の和:172

約数の個数: 108

約数和(自身を含む): 64530648

約数和(自身を除く): 44077788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 83, 90, 111, 148, 166, 180, 185, 222, 249, 332, 333, 370, 415, 444, 498, 555, 666, 740, 747, 830, 996, 1110, 1245, 1332, 1369, 1494, 1660, 1665, 2220, 2490, 2738, 2988, 3071, 3330, 3735, 4107, 4980, 5476, 6142, 6660, 6845, 7470, 8214, 9213, 12284, 12321, 13690, 14940, 15355, 16428, 18426, 20535, 24642, 27380, 27639, 30710, 36852, 41070, 46065, 49284, 55278, 61420, 61605, 82140, 92130, 110556, 113627, 123210, 138195, 184260, 227254, 246420, 276390, 340881, 454508, 552780, 568135, 681762, 1022643, 1136270, 1363524, 1704405, 2045286, 2272540, 3408810, 4090572, 5113215, 6817620, 10226430, 20452860]

約数ペア:

[(1, 20452860), (2, 10226430), (3, 6817620), (4, 5113215), (5, 4090572), (6, 3408810), (9, 2272540), (10, 2045286), (12, 1704405), (15, 1363524), (18, 1136270), (20, 1022643), (30, 681762), (36, 568135), (37, 552780), (45, 454508), (60, 340881), (74, 276390), (83, 246420), (90, 227254), (111, 184260), (148, 138195), (166, 123210), (180, 113627), (185, 110556), (222, 92130), (249, 82140), (332, 61605), (333, 61420), (370, 55278), (415, 49284), (444, 46065), (498, 41070), (555, 36852), (666, 30710), (740, 27639), (747, 27380), (830, 24642), (996, 20535), (1110, 18426), (1245, 16428), (1332, 15355), (1369, 14940), (1494, 13690), (1660, 12321), (1665, 12284), (2220, 9213), (2490, 8214), (2738, 7470), (2988, 6845), (3071, 6660), (3330, 6142), (3735, 5476), (4107, 4980)]