30921945

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{251}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 51093504

約数和(自身を除く): 20171559

約数列:

[1, 3, 5, 15, 43, 129, 191, 215, 251, 573, 645, 753, 955, 1255, 2865, 3765, 8213, 10793, 24639, 32379, 41065, 47941, 53965, 123195, 143823, 161895, 239705, 719115, 2061463, 6184389, 10307315, 30921945]

約数ペア:

[(1, 30921945), (3, 10307315), (5, 6184389), (15, 2061463), (43, 719115), (129, 239705), (191, 161895), (215, 143823), (251, 123195), (573, 53965), (645, 47941), (753, 41065), (955, 32379), (1255, 24639), (2865, 10793), (3765, 8213)]