20187375968

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{114889}}^1$

素因数の和:114952

約数の個数: 72

約数和(自身を含む): 44441749800

約数和(自身を除く): 24254373832

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 68, 76, 136, 152, 272, 289, 304, 323, 544, 578, 608, 646, 1156, 1292, 2312, 2584, 4624, 5168, 5491, 9248, 10336, 10982, 21964, 43928, 87856, 114889, 175712, 229778, 459556, 919112, 1838224, 1953113, 2182891, 3676448, 3906226, 4365782, 7812452, 8731564, 15624904, 17463128, 31249808, 33202921, 34926256, 37109147, 62499616, 66405842, 69852512, 74218294, 132811684, 148436588, 265623368, 296873176, 531246736, 593746352, 630855499, 1062493472, 1187492704, 1261710998, 2523421996, 5046843992, 10093687984, 20187375968]

約数ペア:

[(1, 20187375968), (2, 10093687984), (4, 5046843992), (8, 2523421996), (16, 1261710998), (17, 1187492704), (19, 1062493472), (32, 630855499), (34, 593746352), (38, 531246736), (68, 296873176), (76, 265623368), (136, 148436588), (152, 132811684), (272, 74218294), (289, 69852512), (304, 66405842), (323, 62499616), (544, 37109147), (578, 34926256), (608, 33202921), (646, 31249808), (1156, 17463128), (1292, 15624904), (2312, 8731564), (2584, 7812452), (4624, 4365782), (5168, 3906226), (5491, 3676448), (9248, 2182891), (10336, 1953113), (10982, 1838224), (21964, 919112), (43928, 459556), (87856, 229778), (114889, 175712)]