18823820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 41357568

約数和(自身を除く): 22533748

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 97, 124, 155, 194, 310, 313, 388, 485, 620, 626, 970, 1252, 1565, 1940, 3007, 3130, 6014, 6260, 9703, 12028, 15035, 19406, 30070, 30361, 38812, 48515, 60140, 60722, 97030, 121444, 151805, 194060, 303610, 607220, 941191, 1882382, 3764764, 4705955, 9411910, 18823820]

約数ペア:

[(1, 18823820), (2, 9411910), (4, 4705955), (5, 3764764), (10, 1882382), (20, 941191), (31, 607220), (62, 303610), (97, 194060), (124, 151805), (155, 121444), (194, 97030), (310, 60722), (313, 60140), (388, 48515), (485, 38812), (620, 30361), (626, 30070), (970, 19406), (1252, 15035), (1565, 12028), (1940, 9703), (3007, 6260), (3130, 6014)]