21123645

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 34781184

約数和(自身を除く): 13657539

約数列:

[1, 3, 5, 15, 73, 101, 191, 219, 303, 365, 505, 573, 955, 1095, 1515, 2865, 7373, 13943, 19291, 22119, 36865, 41829, 57873, 69715, 96455, 110595, 209145, 289365, 1408243, 4224729, 7041215, 21123645]

約数ペア:

[(1, 21123645), (3, 7041215), (5, 4224729), (15, 1408243), (73, 289365), (101, 209145), (191, 110595), (219, 96455), (303, 69715), (365, 57873), (505, 41829), (573, 36865), (955, 22119), (1095, 19291), (1515, 13943), (2865, 7373)]