19897845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{577}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 36899520

約数和(自身を除く): 17001675

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 121, 165, 209, 285, 363, 577, 605, 627, 1045, 1731, 1815, 2299, 2885, 3135, 6347, 6897, 8655, 10963, 11495, 19041, 31735, 32889, 34485, 54815, 69817, 95205, 120593, 164445, 209451, 349085, 361779, 602965, 1047255, 1326523, 1808895, 3979569, 6632615, 19897845]

約数ペア:

[(1, 19897845), (3, 6632615), (5, 3979569), (11, 1808895), (15, 1326523), (19, 1047255), (33, 602965), (55, 361779), (57, 349085), (95, 209451), (121, 164445), (165, 120593), (209, 95205), (285, 69817), (363, 54815), (577, 34485), (605, 32889), (627, 31735), (1045, 19041), (1731, 11495), (1815, 10963), (2299, 8655), (2885, 6897), (3135, 6347)]