21531888

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{521}}^1$

素因数の和:583

約数の個数: 120

約数和(自身を含む): 70682976

約数和(自身を除く): 49151088

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 41, 42, 48, 56, 63, 72, 82, 84, 112, 123, 126, 144, 164, 168, 246, 252, 287, 328, 336, 369, 492, 504, 521, 574, 656, 738, 861, 984, 1008, 1042, 1148, 1476, 1563, 1722, 1968, 2084, 2296, 2583, 2952, 3126, 3444, 3647, 4168, 4592, 4689, 5166, 5904, 6252, 6888, 7294, 8336, 9378, 10332, 10941, 12504, 13776, 14588, 18756, 20664, 21361, 21882, 25008, 29176, 32823, 37512, 41328, 42722, 43764, 58352, 64083, 65646, 75024, 85444, 87528, 128166, 131292, 149527, 170888, 175056, 192249, 256332, 262584, 299054, 341776, 384498, 448581, 512664, 525168, 598108, 768996, 897162, 1025328, 1196216, 1345743, 1537992, 1794324, 2392432, 2691486, 3075984, 3588648, 5382972, 7177296, 10765944, 21531888]

約数ペア:

[(1, 21531888), (2, 10765944), (3, 7177296), (4, 5382972), (6, 3588648), (7, 3075984), (8, 2691486), (9, 2392432), (12, 1794324), (14, 1537992), (16, 1345743), (18, 1196216), (21, 1025328), (24, 897162), (28, 768996), (36, 598108), (41, 525168), (42, 512664), (48, 448581), (56, 384498), (63, 341776), (72, 299054), (82, 262584), (84, 256332), (112, 192249), (123, 175056), (126, 170888), (144, 149527), (164, 131292), (168, 128166), (246, 87528), (252, 85444), (287, 75024), (328, 65646), (336, 64083), (369, 58352), (492, 43764), (504, 42722), (521, 41328), (574, 37512), (656, 32823), (738, 29176), (861, 25008), (984, 21882), (1008, 21361), (1042, 20664), (1148, 18756), (1476, 14588), (1563, 13776), (1722, 12504), (1968, 10941), (2084, 10332), (2296, 9378), (2583, 8336), (2952, 7294), (3126, 6888), (3444, 6252), (3647, 5904), (4168, 5166), (4592, 4689)]