21800766

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 51057216

約数和(自身を除く): 29256450

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 41, 51, 78, 82, 102, 123, 221, 246, 401, 442, 533, 663, 697, 802, 1066, 1203, 1326, 1394, 1599, 2091, 2406, 3198, 4182, 5213, 6817, 9061, 10426, 13634, 15639, 16441, 18122, 20451, 27183, 31278, 32882, 40902, 49323, 54366, 88621, 98646, 177242, 213733, 265863, 279497, 427466, 531726, 558994, 641199, 838491, 1282398, 1676982, 3633461, 7266922, 10900383, 21800766]

約数ペア:

[(1, 21800766), (2, 10900383), (3, 7266922), (6, 3633461), (13, 1676982), (17, 1282398), (26, 838491), (34, 641199), (39, 558994), (41, 531726), (51, 427466), (78, 279497), (82, 265863), (102, 213733), (123, 177242), (221, 98646), (246, 88621), (401, 54366), (442, 49323), (533, 40902), (663, 32882), (697, 31278), (802, 27183), (1066, 20451), (1203, 18122), (1326, 16441), (1394, 15639), (1599, 13634), (2091, 10426), (2406, 9061), (3198, 6817), (4182, 5213)]