64745940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{154157}}^1$

素因数の和:154176

約数の個数: 48

約数和(自身を含む): 207188352

約数和(自身を除く): 142442412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 154157, 308314, 462471, 616628, 770785, 924942, 1079099, 1541570, 1849884, 2158198, 2312355, 3083140, 3237297, 4316396, 4624710, 5395495, 6474594, 9249420, 10790990, 12949188, 16186485, 21581980, 32372970, 64745940]

約数ペア:

[(1, 64745940), (2, 32372970), (3, 21581980), (4, 16186485), (5, 12949188), (6, 10790990), (7, 9249420), (10, 6474594), (12, 5395495), (14, 4624710), (15, 4316396), (20, 3237297), (21, 3083140), (28, 2312355), (30, 2158198), (35, 1849884), (42, 1541570), (60, 1079099), (70, 924942), (84, 770785), (105, 616628), (140, 462471), (210, 308314), (420, 154157)]