18900700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:132

約数の個数: 144

約数和(自身を含む): 52885504

約数和(自身を除く): 33984804

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 31, 35, 50, 52, 62, 65, 67, 70, 91, 100, 124, 130, 134, 140, 155, 175, 182, 217, 260, 268, 310, 325, 335, 350, 364, 403, 434, 455, 469, 620, 650, 670, 700, 775, 806, 868, 871, 910, 938, 1085, 1300, 1340, 1550, 1612, 1675, 1742, 1820, 1876, 2015, 2077, 2170, 2275, 2345, 2821, 3100, 3350, 3484, 4030, 4154, 4340, 4355, 4550, 4690, 5425, 5642, 6097, 6700, 8060, 8308, 8710, 9100, 9380, 10075, 10385, 10850, 11284, 11725, 12194, 14105, 14539, 17420, 20150, 20770, 21700, 21775, 23450, 24388, 27001, 28210, 29078, 30485, 40300, 41540, 43550, 46900, 51925, 54002, 56420, 58156, 60970, 70525, 72695, 87100, 103850, 108004, 121940, 135005, 141050, 145390, 152425, 189007, 207700, 270010, 282100, 290780, 304850, 363475, 378014, 540020, 609700, 675025, 726950, 756028, 945035, 1350050, 1453900, 1890070, 2700100, 3780140, 4725175, 9450350, 18900700]

約数ペア:

[(1, 18900700), (2, 9450350), (4, 4725175), (5, 3780140), (7, 2700100), (10, 1890070), (13, 1453900), (14, 1350050), (20, 945035), (25, 756028), (26, 726950), (28, 675025), (31, 609700), (35, 540020), (50, 378014), (52, 363475), (62, 304850), (65, 290780), (67, 282100), (70, 270010), (91, 207700), (100, 189007), (124, 152425), (130, 145390), (134, 141050), (140, 135005), (155, 121940), (175, 108004), (182, 103850), (217, 87100), (260, 72695), (268, 70525), (310, 60970), (325, 58156), (335, 56420), (350, 54002), (364, 51925), (403, 46900), (434, 43550), (455, 41540), (469, 40300), (620, 30485), (650, 29078), (670, 28210), (700, 27001), (775, 24388), (806, 23450), (868, 21775), (871, 21700), (910, 20770), (938, 20150), (1085, 17420), (1300, 14539), (1340, 14105), (1550, 12194), (1612, 11725), (1675, 11284), (1742, 10850), (1820, 10385), (1876, 10075), (2015, 9380), (2077, 9100), (2170, 8710), (2275, 8308), (2345, 8060), (2821, 6700), (3100, 6097), (3350, 5642), (3484, 5425), (4030, 4690), (4154, 4550), (4340, 4355)]