21630204

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 56936880

約数和(自身を除く): 35306676

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 89, 129, 157, 172, 178, 258, 267, 314, 356, 387, 471, 516, 534, 628, 774, 801, 942, 1068, 1413, 1548, 1602, 1884, 2826, 3204, 3827, 5652, 6751, 7654, 11481, 13502, 13973, 15308, 20253, 22962, 27004, 27946, 34443, 40506, 41919, 45924, 55892, 60759, 68886, 81012, 83838, 121518, 125757, 137772, 167676, 243036, 251514, 503028, 600839, 1201678, 1802517, 2403356, 3605034, 5407551, 7210068, 10815102, 21630204]

約数ペア:

[(1, 21630204), (2, 10815102), (3, 7210068), (4, 5407551), (6, 3605034), (9, 2403356), (12, 1802517), (18, 1201678), (36, 600839), (43, 503028), (86, 251514), (89, 243036), (129, 167676), (157, 137772), (172, 125757), (178, 121518), (258, 83838), (267, 81012), (314, 68886), (356, 60759), (387, 55892), (471, 45924), (516, 41919), (534, 40506), (628, 34443), (774, 27946), (801, 27004), (942, 22962), (1068, 20253), (1413, 15308), (1548, 13973), (1602, 13502), (1884, 11481), (2826, 7654), (3204, 6751), (3827, 5652)]