221620984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1297}}^1$

素因数の和:1400

約数の個数: 64

約数和(自身を含む): 471018240

約数和(自身を除く): 249397256

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 53, 62, 104, 106, 124, 212, 248, 403, 424, 689, 806, 1297, 1378, 1612, 1643, 2594, 2756, 3224, 3286, 5188, 5512, 6572, 10376, 13144, 16861, 21359, 33722, 40207, 42718, 67444, 68741, 80414, 85436, 134888, 137482, 160828, 170872, 274964, 321656, 522691, 549928, 893633, 1045382, 1787266, 2090764, 2130971, 3574532, 4181528, 4261942, 7149064, 8523884, 17047768, 27702623, 55405246, 110810492, 221620984]

約数ペア:

[(1, 221620984), (2, 110810492), (4, 55405246), (8, 27702623), (13, 17047768), (26, 8523884), (31, 7149064), (52, 4261942), (53, 4181528), (62, 3574532), (104, 2130971), (106, 2090764), (124, 1787266), (212, 1045382), (248, 893633), (403, 549928), (424, 522691), (689, 321656), (806, 274964), (1297, 170872), (1378, 160828), (1612, 137482), (1643, 134888), (2594, 85436), (2756, 80414), (3224, 68741), (3286, 67444), (5188, 42718), (5512, 40207), (6572, 33722), (10376, 21359), (13144, 16861)]