21881464

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{569}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 27366536

約数列:

[1, 2, 4, 8, 11, 19, 22, 23, 38, 44, 46, 76, 88, 92, 152, 184, 209, 253, 418, 437, 506, 569, 836, 874, 1012, 1138, 1672, 1748, 2024, 2276, 3496, 4552, 4807, 6259, 9614, 10811, 12518, 13087, 19228, 21622, 25036, 26174, 38456, 43244, 50072, 52348, 86488, 104696, 118921, 143957, 237842, 248653, 287914, 475684, 497306, 575828, 951368, 994612, 1151656, 1989224, 2735183, 5470366, 10940732, 21881464]

約数ペア:

[(1, 21881464), (2, 10940732), (4, 5470366), (8, 2735183), (11, 1989224), (19, 1151656), (22, 994612), (23, 951368), (38, 575828), (44, 497306), (46, 475684), (76, 287914), (88, 248653), (92, 237842), (152, 143957), (184, 118921), (209, 104696), (253, 86488), (418, 52348), (437, 50072), (506, 43244), (569, 38456), (836, 26174), (874, 25036), (1012, 21622), (1138, 19228), (1672, 13087), (1748, 12518), (2024, 10811), (2276, 9614), (3496, 6259), (4552, 4807)]