20621595

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 36073728

約数和(自身を除く): 15452133

約数列:

[1, 3, 5, 15, 17, 51, 67, 71, 85, 201, 213, 255, 289, 335, 355, 867, 1005, 1065, 1139, 1207, 1445, 3417, 3621, 4335, 4757, 5695, 6035, 14271, 17085, 18105, 19363, 20519, 23785, 58089, 61557, 71355, 80869, 96815, 102595, 242607, 290445, 307785, 404345, 1213035, 1374773, 4124319, 6873865, 20621595]

約数ペア:

[(1, 20621595), (3, 6873865), (5, 4124319), (15, 1374773), (17, 1213035), (51, 404345), (67, 307785), (71, 290445), (85, 242607), (201, 102595), (213, 96815), (255, 80869), (289, 71355), (335, 61557), (355, 58089), (867, 23785), (1005, 20519), (1065, 19363), (1139, 18105), (1207, 17085), (1445, 14271), (3417, 6035), (3621, 5695), (4335, 4757)]