20844615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 39283200

約数和(自身を除く): 18438585

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 61, 95, 109, 165, 183, 209, 285, 305, 327, 545, 627, 671, 915, 1045, 1159, 1199, 1635, 2013, 2071, 3135, 3355, 3477, 3597, 5795, 5995, 6213, 6649, 10065, 10355, 12749, 17385, 17985, 19947, 22781, 31065, 33245, 38247, 63745, 68343, 73139, 99735, 113905, 126331, 191235, 219417, 341715, 365695, 378993, 631655, 1097085, 1389641, 1894965, 4168923, 6948205, 20844615]

約数ペア:

[(1, 20844615), (3, 6948205), (5, 4168923), (11, 1894965), (15, 1389641), (19, 1097085), (33, 631655), (55, 378993), (57, 365695), (61, 341715), (95, 219417), (109, 191235), (165, 126331), (183, 113905), (209, 99735), (285, 73139), (305, 68343), (327, 63745), (545, 38247), (627, 33245), (671, 31065), (915, 22781), (1045, 19947), (1159, 17985), (1199, 17385), (1635, 12749), (2013, 10355), (2071, 10065), (3135, 6649), (3355, 6213), (3477, 5995), (3597, 5795)]