20089984

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 42497280

約数和(自身を除く): 22407296

約数列:

[1, 2, 4, 8, 16, 31, 32, 61, 62, 64, 83, 122, 124, 128, 166, 244, 248, 332, 488, 496, 664, 976, 992, 1328, 1891, 1952, 1984, 2573, 2656, 3782, 3904, 3968, 5063, 5146, 5312, 7564, 7808, 10126, 10292, 10624, 15128, 20252, 20584, 30256, 40504, 41168, 60512, 81008, 82336, 121024, 156953, 162016, 164672, 242048, 313906, 324032, 329344, 627812, 648064, 1255624, 2511248, 5022496, 10044992, 20089984]

約数ペア:

[(1, 20089984), (2, 10044992), (4, 5022496), (8, 2511248), (16, 1255624), (31, 648064), (32, 627812), (61, 329344), (62, 324032), (64, 313906), (83, 242048), (122, 164672), (124, 162016), (128, 156953), (166, 121024), (244, 82336), (248, 81008), (332, 60512), (488, 41168), (496, 40504), (664, 30256), (976, 20584), (992, 20252), (1328, 15128), (1891, 10624), (1952, 10292), (1984, 10126), (2573, 7808), (2656, 7564), (3782, 5312), (3904, 5146), (3968, 5063)]