131174420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{197}}^2$

素因数の和:429

約数の個数: 54

約数和(自身を含む): 299807802

約数和(自身を除く): 168633382

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 197, 260, 338, 394, 676, 788, 845, 985, 1690, 1970, 2561, 3380, 3940, 5122, 10244, 12805, 25610, 33293, 38809, 51220, 66586, 77618, 133172, 155236, 166465, 194045, 332930, 388090, 504517, 665860, 776180, 1009034, 2018068, 2522585, 5045170, 6558721, 10090340, 13117442, 26234884, 32793605, 65587210, 131174420]

約数ペア:

[(1, 131174420), (2, 65587210), (4, 32793605), (5, 26234884), (10, 13117442), (13, 10090340), (20, 6558721), (26, 5045170), (52, 2522585), (65, 2018068), (130, 1009034), (169, 776180), (197, 665860), (260, 504517), (338, 388090), (394, 332930), (676, 194045), (788, 166465), (845, 155236), (985, 133172), (1690, 77618), (1970, 66586), (2561, 51220), (3380, 38809), (3940, 33293), (5122, 25610), (10244, 12805)]