216991475

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{6829}}^1$

素因数の和:6911

約数の個数: 24

約数和(自身を含む): 284565120

約数和(自身を除く): 67573645

約数列:

[1, 5, 25, 31, 41, 155, 205, 775, 1025, 1271, 6355, 6829, 31775, 34145, 170725, 211699, 279989, 1058495, 1399945, 5292475, 6999725, 8679659, 43398295, 216991475]

約数ペア:

[(1, 216991475), (5, 43398295), (25, 8679659), (31, 6999725), (41, 5292475), (155, 1399945), (205, 1058495), (775, 279989), (1025, 211699), (1271, 170725), (6355, 34145), (6829, 31775)]