21015216

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{7681}}^1$

素因数の和:7714

約数の個数: 60

約数和(自身を含む): 61916920

約数和(自身を除く): 40901704

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 72, 76, 114, 144, 152, 171, 228, 304, 342, 456, 684, 912, 1368, 2736, 7681, 15362, 23043, 30724, 46086, 61448, 69129, 92172, 122896, 138258, 145939, 184344, 276516, 291878, 368688, 437817, 553032, 583756, 875634, 1106064, 1167512, 1313451, 1751268, 2335024, 2626902, 3502536, 5253804, 7005072, 10507608, 21015216]

約数ペア:

[(1, 21015216), (2, 10507608), (3, 7005072), (4, 5253804), (6, 3502536), (8, 2626902), (9, 2335024), (12, 1751268), (16, 1313451), (18, 1167512), (19, 1106064), (24, 875634), (36, 583756), (38, 553032), (48, 437817), (57, 368688), (72, 291878), (76, 276516), (114, 184344), (144, 145939), (152, 138258), (171, 122896), (228, 92172), (304, 69129), (342, 61448), (456, 46086), (684, 30724), (912, 23043), (1368, 15362), (2736, 7681)]