20499776

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:847

約数の個数: 56

約数和(自身を含む): 45634656

約数和(自身を除く): 25134880

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 37, 44, 64, 74, 88, 148, 176, 296, 352, 407, 592, 704, 787, 814, 1184, 1574, 1628, 2368, 3148, 3256, 6296, 6512, 8657, 12592, 13024, 17314, 25184, 26048, 29119, 34628, 50368, 58238, 69256, 116476, 138512, 232952, 277024, 320309, 465904, 554048, 640618, 931808, 1281236, 1863616, 2562472, 5124944, 10249888, 20499776]

約数ペア:

[(1, 20499776), (2, 10249888), (4, 5124944), (8, 2562472), (11, 1863616), (16, 1281236), (22, 931808), (32, 640618), (37, 554048), (44, 465904), (64, 320309), (74, 277024), (88, 232952), (148, 138512), (176, 116476), (296, 69256), (352, 58238), (407, 50368), (592, 34628), (704, 29119), (787, 26048), (814, 25184), (1184, 17314), (1574, 13024), (1628, 12592), (2368, 8657), (3148, 6512), (3256, 6296)]