21402073105

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{100129}}^1$

素因数の和:100369

約数の個数: 32

約数和(自身を含む): 30452336640

約数和(自身を除く): 9050263535

約数列:

[1, 5, 7, 31, 35, 155, 197, 217, 985, 1085, 1379, 6107, 6895, 30535, 42749, 100129, 213745, 500645, 700903, 3103999, 3504515, 15519995, 19725413, 21727993, 98627065, 108639965, 138077891, 611487803, 690389455, 3057439015, 4280414621, 21402073105]

約数ペア:

[(1, 21402073105), (5, 4280414621), (7, 3057439015), (31, 690389455), (35, 611487803), (155, 138077891), (197, 108639965), (217, 98627065), (985, 21727993), (1085, 19725413), (1379, 15519995), (6107, 3504515), (6895, 3103999), (30535, 700903), (42749, 500645), (100129, 213745)]