20379008

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 45039120

約数和(自身を除く): 24660112

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 128, 148, 208, 296, 331, 416, 481, 592, 662, 832, 962, 1184, 1324, 1664, 1924, 2368, 2648, 3848, 4303, 4736, 5296, 7696, 8606, 10592, 12247, 15392, 17212, 21184, 24494, 30784, 34424, 42368, 48988, 61568, 68848, 97976, 137696, 159211, 195952, 275392, 318422, 391904, 550784, 636844, 783808, 1273688, 1567616, 2547376, 5094752, 10189504, 20379008]

約数ペア:

[(1, 20379008), (2, 10189504), (4, 5094752), (8, 2547376), (13, 1567616), (16, 1273688), (26, 783808), (32, 636844), (37, 550784), (52, 391904), (64, 318422), (74, 275392), (104, 195952), (128, 159211), (148, 137696), (208, 97976), (296, 68848), (331, 61568), (416, 48988), (481, 42368), (592, 34424), (662, 30784), (832, 24494), (962, 21184), (1184, 17212), (1324, 15392), (1664, 12247), (1924, 10592), (2368, 8606), (2648, 7696), (3848, 5296), (4303, 4736)]