21652365

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 40875840

約数和(自身を除く): 19223475

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 89, 105, 147, 245, 267, 331, 445, 623, 735, 993, 1335, 1655, 1869, 2317, 3115, 4361, 4965, 6951, 9345, 11585, 13083, 16219, 21805, 29459, 34755, 48657, 65415, 81095, 88377, 147295, 206213, 243285, 441885, 618639, 1031065, 1443491, 3093195, 4330473, 7217455, 21652365]

約数ペア:

[(1, 21652365), (3, 7217455), (5, 4330473), (7, 3093195), (15, 1443491), (21, 1031065), (35, 618639), (49, 441885), (89, 243285), (105, 206213), (147, 147295), (245, 88377), (267, 81095), (331, 65415), (445, 48657), (623, 34755), (735, 29459), (993, 21805), (1335, 16219), (1655, 13083), (1869, 11585), (2317, 9345), (3115, 6951), (4361, 4965)]