19990890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1471}}^1$

素因数の和:1635

約数の個数: 48

約数和(自身を含む): 52356096

約数和(自身を除く): 32365206

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 151, 302, 453, 755, 906, 1359, 1471, 1510, 2265, 2718, 2942, 4413, 4530, 6795, 7355, 8826, 13239, 13590, 14710, 22065, 26478, 44130, 66195, 132390, 222121, 444242, 666363, 1110605, 1332726, 1999089, 2221210, 3331815, 3998178, 6663630, 9995445, 19990890]

約数ペア:

[(1, 19990890), (2, 9995445), (3, 6663630), (5, 3998178), (6, 3331815), (9, 2221210), (10, 1999089), (15, 1332726), (18, 1110605), (30, 666363), (45, 444242), (90, 222121), (151, 132390), (302, 66195), (453, 44130), (755, 26478), (906, 22065), (1359, 14710), (1471, 13590), (1510, 13239), (2265, 8826), (2718, 7355), (2942, 6795), (4413, 4530)]