21177468

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1223}}^1$

素因数の和:1283

約数の個数: 72

約数和(自身を含む): 59256288

約数和(自身を除く): 38078820

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 37, 39, 52, 74, 78, 111, 117, 148, 156, 222, 234, 333, 444, 468, 481, 666, 962, 1223, 1332, 1443, 1924, 2446, 2886, 3669, 4329, 4892, 5772, 7338, 8658, 11007, 14676, 15899, 17316, 22014, 31798, 44028, 45251, 47697, 63596, 90502, 95394, 135753, 143091, 181004, 190788, 271506, 286182, 407259, 543012, 572364, 588263, 814518, 1176526, 1629036, 1764789, 2353052, 3529578, 5294367, 7059156, 10588734, 21177468]

約数ペア:

[(1, 21177468), (2, 10588734), (3, 7059156), (4, 5294367), (6, 3529578), (9, 2353052), (12, 1764789), (13, 1629036), (18, 1176526), (26, 814518), (36, 588263), (37, 572364), (39, 543012), (52, 407259), (74, 286182), (78, 271506), (111, 190788), (117, 181004), (148, 143091), (156, 135753), (222, 95394), (234, 90502), (333, 63596), (444, 47697), (468, 45251), (481, 44028), (666, 31798), (962, 22014), (1223, 17316), (1332, 15899), (1443, 14676), (1924, 11007), (2446, 8658), (2886, 7338), (3669, 5772), (4329, 4892)]