21579516

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4507}}^1$

素因数の和:4543

約数の個数: 72

約数和(自身を含む): 65636480

約数和(自身を除く): 44056964

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4507, 4788, 9014, 13521, 18028, 27042, 31549, 40563, 54084, 63098, 81126, 85633, 94647, 126196, 162252, 171266, 189294, 256899, 283941, 342532, 378588, 513798, 567882, 599431, 770697, 1027596, 1135764, 1198862, 1541394, 1798293, 2397724, 3082788, 3596586, 5394879, 7193172, 10789758, 21579516]

約数ペア:

[(1, 21579516), (2, 10789758), (3, 7193172), (4, 5394879), (6, 3596586), (7, 3082788), (9, 2397724), (12, 1798293), (14, 1541394), (18, 1198862), (19, 1135764), (21, 1027596), (28, 770697), (36, 599431), (38, 567882), (42, 513798), (57, 378588), (63, 342532), (76, 283941), (84, 256899), (114, 189294), (126, 171266), (133, 162252), (171, 126196), (228, 94647), (252, 85633), (266, 81126), (342, 63098), (399, 54084), (532, 40563), (684, 31549), (798, 27042), (1197, 18028), (1596, 13521), (2394, 9014), (4507, 4788)]