21200868

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 58476600

約数和(自身を除く): 37275732

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 89, 117, 156, 178, 234, 267, 356, 468, 509, 534, 801, 1018, 1068, 1157, 1527, 1602, 2036, 2314, 3054, 3204, 3471, 4581, 4628, 6108, 6617, 6942, 9162, 10413, 13234, 13884, 18324, 19851, 20826, 26468, 39702, 41652, 45301, 59553, 79404, 90602, 119106, 135903, 181204, 238212, 271806, 407709, 543612, 588913, 815418, 1177826, 1630836, 1766739, 2355652, 3533478, 5300217, 7066956, 10600434, 21200868]

約数ペア:

[(1, 21200868), (2, 10600434), (3, 7066956), (4, 5300217), (6, 3533478), (9, 2355652), (12, 1766739), (13, 1630836), (18, 1177826), (26, 815418), (36, 588913), (39, 543612), (52, 407709), (78, 271806), (89, 238212), (117, 181204), (156, 135903), (178, 119106), (234, 90602), (267, 79404), (356, 59553), (468, 45301), (509, 41652), (534, 39702), (801, 26468), (1018, 20826), (1068, 19851), (1157, 18324), (1527, 13884), (1602, 13234), (2036, 10413), (2314, 9162), (3054, 6942), (3204, 6617), (3471, 6108), (4581, 4628)]