28467920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{883}}^1$

素因数の和:940

約数の個数: 80

約数和(自身を含む): 73661952

約数和(自身を除く): 45194032

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 883, 1040, 1240, 1612, 1766, 2015, 2480, 3224, 3532, 4030, 4415, 6448, 7064, 8060, 8830, 11479, 14128, 16120, 17660, 22958, 27373, 32240, 35320, 45916, 54746, 57395, 70640, 91832, 109492, 114790, 136865, 183664, 218984, 229580, 273730, 355849, 437968, 459160, 547460, 711698, 918320, 1094920, 1423396, 1779245, 2189840, 2846792, 3558490, 5693584, 7116980, 14233960, 28467920]

約数ペア:

[(1, 28467920), (2, 14233960), (4, 7116980), (5, 5693584), (8, 3558490), (10, 2846792), (13, 2189840), (16, 1779245), (20, 1423396), (26, 1094920), (31, 918320), (40, 711698), (52, 547460), (62, 459160), (65, 437968), (80, 355849), (104, 273730), (124, 229580), (130, 218984), (155, 183664), (208, 136865), (248, 114790), (260, 109492), (310, 91832), (403, 70640), (496, 57395), (520, 54746), (620, 45916), (806, 35320), (883, 32240), (1040, 27373), (1240, 22958), (1612, 17660), (1766, 16120), (2015, 14128), (2480, 11479), (3224, 8830), (3532, 8060), (4030, 7064), (4415, 6448)]