19620920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2347}}^1$

素因数の和:2388

約数の個数: 64

約数和(自身を含む): 50716800

約数和(自身を除く): 31095880

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2347, 4180, 4694, 8360, 9388, 11735, 18776, 23470, 25817, 44593, 46940, 51634, 89186, 93880, 103268, 129085, 178372, 206536, 222965, 258170, 356744, 445930, 490523, 516340, 891860, 981046, 1032680, 1783720, 1962092, 2452615, 3924184, 4905230, 9810460, 19620920]

約数ペア:

[(1, 19620920), (2, 9810460), (4, 4905230), (5, 3924184), (8, 2452615), (10, 1962092), (11, 1783720), (19, 1032680), (20, 981046), (22, 891860), (38, 516340), (40, 490523), (44, 445930), (55, 356744), (76, 258170), (88, 222965), (95, 206536), (110, 178372), (152, 129085), (190, 103268), (209, 93880), (220, 89186), (380, 51634), (418, 46940), (440, 44593), (760, 25817), (836, 23470), (1045, 18776), (1672, 11735), (2090, 9388), (2347, 8360), (4180, 4694)]