21116060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{743}}^1$

素因数の和:795

約数の個数: 72

約数和(自身を含む): 53434080

約数和(自身を除く): 32318020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 743, 812, 980, 1015, 1421, 1486, 2030, 2842, 2972, 3715, 4060, 5201, 5684, 7105, 7430, 10402, 14210, 14860, 20804, 21547, 26005, 28420, 36407, 43094, 52010, 72814, 86188, 104020, 107735, 145628, 150829, 182035, 215470, 301658, 364070, 430940, 603316, 728140, 754145, 1055803, 1508290, 2111606, 3016580, 4223212, 5279015, 10558030, 21116060]

約数ペア:

[(1, 21116060), (2, 10558030), (4, 5279015), (5, 4223212), (7, 3016580), (10, 2111606), (14, 1508290), (20, 1055803), (28, 754145), (29, 728140), (35, 603316), (49, 430940), (58, 364070), (70, 301658), (98, 215470), (116, 182035), (140, 150829), (145, 145628), (196, 107735), (203, 104020), (245, 86188), (290, 72814), (406, 52010), (490, 43094), (580, 36407), (743, 28420), (812, 26005), (980, 21547), (1015, 20804), (1421, 14860), (1486, 14210), (2030, 10402), (2842, 7430), (2972, 7105), (3715, 5684), (4060, 5201)]