21111904

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1621}}^1$

素因数の和:1679

約数の個数: 48

約数和(自身を含む): 46596816

約数和(自身を除く): 25484912

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 37, 44, 74, 88, 148, 176, 296, 352, 407, 592, 814, 1184, 1621, 1628, 3242, 3256, 6484, 6512, 12968, 13024, 17831, 25936, 35662, 51872, 59977, 71324, 119954, 142648, 239908, 285296, 479816, 570592, 659747, 959632, 1319494, 1919264, 2638988, 5277976, 10555952, 21111904]

約数ペア:

[(1, 21111904), (2, 10555952), (4, 5277976), (8, 2638988), (11, 1919264), (16, 1319494), (22, 959632), (32, 659747), (37, 570592), (44, 479816), (74, 285296), (88, 239908), (148, 142648), (176, 119954), (296, 71324), (352, 59977), (407, 51872), (592, 35662), (814, 25936), (1184, 17831), (1621, 13024), (1628, 12968), (3242, 6512), (3256, 6484)]