20415564

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:197

約数の個数: 120

約数和(自身を含む): 59479728

約数和(自身を除く): 39064164

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 37, 39, 52, 54, 74, 78, 81, 108, 111, 117, 131, 148, 156, 162, 222, 234, 262, 324, 333, 351, 393, 444, 468, 481, 524, 666, 702, 786, 962, 999, 1053, 1179, 1332, 1404, 1443, 1572, 1703, 1924, 1998, 2106, 2358, 2886, 2997, 3406, 3537, 3996, 4212, 4329, 4716, 4847, 5109, 5772, 5994, 6812, 7074, 8658, 9694, 10218, 10611, 11988, 12987, 14148, 14541, 15327, 17316, 19388, 20436, 21222, 25974, 29082, 30654, 38961, 42444, 43623, 45981, 51948, 58164, 61308, 63011, 77922, 87246, 91962, 126022, 130869, 137943, 155844, 174492, 183924, 189033, 252044, 261738, 275886, 378066, 392607, 523476, 551772, 567099, 756132, 785214, 1134198, 1570428, 1701297, 2268396, 3402594, 5103891, 6805188, 10207782, 20415564]

約数ペア:

[(1, 20415564), (2, 10207782), (3, 6805188), (4, 5103891), (6, 3402594), (9, 2268396), (12, 1701297), (13, 1570428), (18, 1134198), (26, 785214), (27, 756132), (36, 567099), (37, 551772), (39, 523476), (52, 392607), (54, 378066), (74, 275886), (78, 261738), (81, 252044), (108, 189033), (111, 183924), (117, 174492), (131, 155844), (148, 137943), (156, 130869), (162, 126022), (222, 91962), (234, 87246), (262, 77922), (324, 63011), (333, 61308), (351, 58164), (393, 51948), (444, 45981), (468, 43623), (481, 42444), (524, 38961), (666, 30654), (702, 29082), (786, 25974), (962, 21222), (999, 20436), (1053, 19388), (1179, 17316), (1332, 15327), (1404, 14541), (1443, 14148), (1572, 12987), (1703, 11988), (1924, 10611), (1998, 10218), (2106, 9694), (2358, 8658), (2886, 7074), (2997, 6812), (3406, 5994), (3537, 5772), (3996, 5109), (4212, 4847), (4329, 4716)]