20154733840

素因数分解:

$2^4\times 5^1\times {\mathrm{15739}}^1\times {\mathrm{16007}}^1$

素因数の和:31759

約数の個数: 40

約数和(自身を含む): 46865661120

約数和(自身を除く): 26710927280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15739, 16007, 31478, 32014, 62956, 64028, 78695, 80035, 125912, 128056, 157390, 160070, 251824, 256112, 314780, 320140, 629560, 640280, 1259120, 1280560, 251934173, 503868346, 1007736692, 1259670865, 2015473384, 2519341730, 4030946768, 5038683460, 10077366920, 20154733840]

約数ペア:

[(1, 20154733840), (2, 10077366920), (4, 5038683460), (5, 4030946768), (8, 2519341730), (10, 2015473384), (16, 1259670865), (20, 1007736692), (40, 503868346), (80, 251934173), (15739, 1280560), (16007, 1259120), (31478, 640280), (32014, 629560), (62956, 320140), (64028, 314780), (78695, 256112), (80035, 251824), (125912, 160070), (128056, 157390)]