18779968

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:491

約数の個数: 56

約数和(自身を含む): 40517064

約数和(自身を除く): 21737096

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 41, 64, 68, 82, 136, 164, 272, 328, 421, 544, 656, 697, 842, 1088, 1312, 1394, 1684, 2624, 2788, 3368, 5576, 6736, 7157, 11152, 13472, 14314, 17261, 22304, 26944, 28628, 34522, 44608, 57256, 69044, 114512, 138088, 229024, 276176, 293437, 458048, 552352, 586874, 1104704, 1173748, 2347496, 4694992, 9389984, 18779968]

約数ペア:

[(1, 18779968), (2, 9389984), (4, 4694992), (8, 2347496), (16, 1173748), (17, 1104704), (32, 586874), (34, 552352), (41, 458048), (64, 293437), (68, 276176), (82, 229024), (136, 138088), (164, 114512), (272, 69044), (328, 57256), (421, 44608), (544, 34522), (656, 28628), (697, 26944), (842, 22304), (1088, 17261), (1312, 14314), (1394, 13472), (1684, 11152), (2624, 7157), (2788, 6736), (3368, 5576)]