21341120

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3923}}^1$

素因数の和:3957

約数の個数: 56

約数和(自身を含む): 53821584

約数和(自身を除く): 32480464

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3923, 5440, 7846, 15692, 19615, 31384, 39230, 62768, 66691, 78460, 125536, 133382, 156920, 251072, 266764, 313840, 333455, 533528, 627680, 666910, 1067056, 1255360, 1333820, 2134112, 2667640, 4268224, 5335280, 10670560, 21341120]

約数ペア:

[(1, 21341120), (2, 10670560), (4, 5335280), (5, 4268224), (8, 2667640), (10, 2134112), (16, 1333820), (17, 1255360), (20, 1067056), (32, 666910), (34, 627680), (40, 533528), (64, 333455), (68, 313840), (80, 266764), (85, 251072), (136, 156920), (160, 133382), (170, 125536), (272, 78460), (320, 66691), (340, 62768), (544, 39230), (680, 31384), (1088, 19615), (1360, 15692), (2720, 7846), (3923, 5440)]