19955260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 48771072

約数和(自身を除く): 28815812

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 47, 52, 65, 71, 92, 94, 115, 130, 142, 188, 230, 235, 260, 284, 299, 355, 460, 470, 598, 611, 710, 923, 940, 1081, 1196, 1222, 1420, 1495, 1633, 1846, 2162, 2444, 2990, 3055, 3266, 3337, 3692, 4324, 4615, 5405, 5980, 6110, 6532, 6674, 8165, 9230, 10810, 12220, 13348, 14053, 16330, 16685, 18460, 21229, 21620, 28106, 32660, 33370, 42458, 43381, 56212, 66740, 70265, 76751, 84916, 86762, 106145, 140530, 153502, 173524, 212290, 216905, 281060, 307004, 383755, 424580, 433810, 767510, 867620, 997763, 1535020, 1995526, 3991052, 4988815, 9977630, 19955260]

約数ペア:

[(1, 19955260), (2, 9977630), (4, 4988815), (5, 3991052), (10, 1995526), (13, 1535020), (20, 997763), (23, 867620), (26, 767510), (46, 433810), (47, 424580), (52, 383755), (65, 307004), (71, 281060), (92, 216905), (94, 212290), (115, 173524), (130, 153502), (142, 140530), (188, 106145), (230, 86762), (235, 84916), (260, 76751), (284, 70265), (299, 66740), (355, 56212), (460, 43381), (470, 42458), (598, 33370), (611, 32660), (710, 28106), (923, 21620), (940, 21229), (1081, 18460), (1196, 16685), (1222, 16330), (1420, 14053), (1495, 13348), (1633, 12220), (1846, 10810), (2162, 9230), (2444, 8165), (2990, 6674), (3055, 6532), (3266, 6110), (3337, 5980), (3692, 5405), (4324, 4615)]