18650840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 47433600

約数和(自身を除く): 28782760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 89, 104, 124, 130, 155, 169, 178, 248, 260, 310, 338, 356, 403, 445, 520, 620, 676, 712, 806, 845, 890, 1157, 1240, 1352, 1612, 1690, 1780, 2015, 2314, 2759, 3224, 3380, 3560, 4030, 4628, 5239, 5518, 5785, 6760, 8060, 9256, 10478, 11036, 11570, 13795, 15041, 16120, 20956, 22072, 23140, 26195, 27590, 30082, 35867, 41912, 46280, 52390, 55180, 60164, 71734, 75205, 104780, 110360, 120328, 143468, 150410, 179335, 209560, 286936, 300820, 358670, 466271, 601640, 717340, 932542, 1434680, 1865084, 2331355, 3730168, 4662710, 9325420, 18650840]

約数ペア:

[(1, 18650840), (2, 9325420), (4, 4662710), (5, 3730168), (8, 2331355), (10, 1865084), (13, 1434680), (20, 932542), (26, 717340), (31, 601640), (40, 466271), (52, 358670), (62, 300820), (65, 286936), (89, 209560), (104, 179335), (124, 150410), (130, 143468), (155, 120328), (169, 110360), (178, 104780), (248, 75205), (260, 71734), (310, 60164), (338, 55180), (356, 52390), (403, 46280), (445, 41912), (520, 35867), (620, 30082), (676, 27590), (712, 26195), (806, 23140), (845, 22072), (890, 20956), (1157, 16120), (1240, 15041), (1352, 13795), (1612, 11570), (1690, 11036), (1780, 10478), (2015, 9256), (2314, 8060), (2759, 6760), (3224, 5785), (3380, 5518), (3560, 5239), (4030, 4628)]