21152235

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1619}}^1$

素因数の和:1707

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 15861525

約数列:

[1, 3, 5, 13, 15, 39, 65, 67, 195, 201, 335, 871, 1005, 1619, 2613, 4355, 4857, 8095, 13065, 21047, 24285, 63141, 105235, 108473, 315705, 325419, 542365, 1410149, 1627095, 4230447, 7050745, 21152235]

約数ペア:

[(1, 21152235), (3, 7050745), (5, 4230447), (13, 1627095), (15, 1410149), (39, 542365), (65, 325419), (67, 315705), (195, 108473), (201, 105235), (335, 63141), (871, 24285), (1005, 21047), (1619, 13065), (2613, 8095), (4355, 4857)]