21359394

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:480

約数の個数: 72

約数和(自身を含む): 54854748

約数和(自身を除く): 33495354

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 61, 63, 98, 122, 126, 147, 183, 294, 366, 397, 427, 441, 549, 794, 854, 882, 1098, 1191, 1281, 2382, 2562, 2779, 2989, 3573, 3843, 5558, 5978, 7146, 7686, 8337, 8967, 16674, 17934, 19453, 24217, 25011, 26901, 38906, 48434, 50022, 53802, 58359, 72651, 116718, 145302, 169519, 175077, 217953, 339038, 350154, 435906, 508557, 1017114, 1186633, 1525671, 2373266, 3051342, 3559899, 7119798, 10679697, 21359394]

約数ペア:

[(1, 21359394), (2, 10679697), (3, 7119798), (6, 3559899), (7, 3051342), (9, 2373266), (14, 1525671), (18, 1186633), (21, 1017114), (42, 508557), (49, 435906), (61, 350154), (63, 339038), (98, 217953), (122, 175077), (126, 169519), (147, 145302), (183, 116718), (294, 72651), (366, 58359), (397, 53802), (427, 50022), (441, 48434), (549, 38906), (794, 26901), (854, 25011), (882, 24217), (1098, 19453), (1191, 17934), (1281, 16674), (2382, 8967), (2562, 8337), (2779, 7686), (2989, 7146), (3573, 5978), (3843, 5558)]