21165560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:169

約数の個数: 96

約数和(自身を含む): 53758080

約数和(自身を除く): 32592520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 101, 104, 124, 130, 155, 169, 202, 248, 260, 310, 338, 403, 404, 505, 520, 620, 676, 806, 808, 845, 1010, 1240, 1313, 1352, 1612, 1690, 2015, 2020, 2626, 3131, 3224, 3380, 4030, 4040, 5239, 5252, 6262, 6565, 6760, 8060, 10478, 10504, 12524, 13130, 15655, 16120, 17069, 20956, 25048, 26195, 26260, 31310, 34138, 40703, 41912, 52390, 52520, 62620, 68276, 81406, 85345, 104780, 125240, 136552, 162812, 170690, 203515, 209560, 325624, 341380, 407030, 529139, 682760, 814060, 1058278, 1628120, 2116556, 2645695, 4233112, 5291390, 10582780, 21165560]

約数ペア:

[(1, 21165560), (2, 10582780), (4, 5291390), (5, 4233112), (8, 2645695), (10, 2116556), (13, 1628120), (20, 1058278), (26, 814060), (31, 682760), (40, 529139), (52, 407030), (62, 341380), (65, 325624), (101, 209560), (104, 203515), (124, 170690), (130, 162812), (155, 136552), (169, 125240), (202, 104780), (248, 85345), (260, 81406), (310, 68276), (338, 62620), (403, 52520), (404, 52390), (505, 41912), (520, 40703), (620, 34138), (676, 31310), (806, 26260), (808, 26195), (845, 25048), (1010, 20956), (1240, 17069), (1313, 16120), (1352, 15655), (1612, 13130), (1690, 12524), (2015, 10504), (2020, 10478), (2626, 8060), (3131, 6760), (3224, 6565), (3380, 6262), (4030, 5252), (4040, 5239)]