19665920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1$

素因数の和:215

約数の個数: 88

約数和(自身を含む): 49521024

約数和(自身を除く): 29855104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 167, 184, 230, 256, 320, 334, 368, 460, 512, 640, 668, 736, 835, 920, 1024, 1280, 1336, 1472, 1670, 1840, 2560, 2672, 2944, 3340, 3680, 3841, 5120, 5344, 5888, 6680, 7360, 7682, 10688, 11776, 13360, 14720, 15364, 19205, 21376, 23552, 26720, 29440, 30728, 38410, 42752, 53440, 58880, 61456, 76820, 85504, 106880, 117760, 122912, 153640, 171008, 213760, 245824, 307280, 427520, 491648, 614560, 855040, 983296, 1229120, 1966592, 2458240, 3933184, 4916480, 9832960, 19665920]

約数ペア:

[(1, 19665920), (2, 9832960), (4, 4916480), (5, 3933184), (8, 2458240), (10, 1966592), (16, 1229120), (20, 983296), (23, 855040), (32, 614560), (40, 491648), (46, 427520), (64, 307280), (80, 245824), (92, 213760), (115, 171008), (128, 153640), (160, 122912), (167, 117760), (184, 106880), (230, 85504), (256, 76820), (320, 61456), (334, 58880), (368, 53440), (460, 42752), (512, 38410), (640, 30728), (668, 29440), (736, 26720), (835, 23552), (920, 21376), (1024, 19205), (1280, 15364), (1336, 14720), (1472, 13360), (1670, 11776), (1840, 10688), (2560, 7682), (2672, 7360), (2944, 6680), (3340, 5888), (3680, 5344), (3841, 5120)]