21197260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:295

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 33960500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 29, 35, 46, 58, 70, 92, 115, 116, 140, 145, 161, 203, 227, 230, 290, 322, 406, 454, 460, 580, 644, 667, 805, 812, 908, 1015, 1135, 1334, 1589, 1610, 2030, 2270, 2668, 3178, 3220, 3335, 4060, 4540, 4669, 5221, 6356, 6583, 6670, 7945, 9338, 10442, 13166, 13340, 15890, 18676, 20884, 23345, 26105, 26332, 31780, 32915, 36547, 46081, 46690, 52210, 65830, 73094, 92162, 93380, 104420, 131660, 146188, 151409, 182735, 184324, 230405, 302818, 365470, 460810, 605636, 730940, 757045, 921620, 1059863, 1514090, 2119726, 3028180, 4239452, 5299315, 10598630, 21197260]

約数ペア:

[(1, 21197260), (2, 10598630), (4, 5299315), (5, 4239452), (7, 3028180), (10, 2119726), (14, 1514090), (20, 1059863), (23, 921620), (28, 757045), (29, 730940), (35, 605636), (46, 460810), (58, 365470), (70, 302818), (92, 230405), (115, 184324), (116, 182735), (140, 151409), (145, 146188), (161, 131660), (203, 104420), (227, 93380), (230, 92162), (290, 73094), (322, 65830), (406, 52210), (454, 46690), (460, 46081), (580, 36547), (644, 32915), (667, 31780), (805, 26332), (812, 26105), (908, 23345), (1015, 20884), (1135, 18676), (1334, 15890), (1589, 13340), (1610, 13166), (2030, 10442), (2270, 9338), (2668, 7945), (3178, 6670), (3220, 6583), (3335, 6356), (4060, 5221), (4540, 4669)]