78899340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 247919616

約数和(自身を除く): 169020276

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 31, 39, 52, 60, 62, 65, 78, 93, 124, 130, 155, 156, 169, 186, 195, 251, 260, 310, 338, 372, 390, 403, 465, 502, 507, 620, 676, 753, 780, 806, 845, 930, 1004, 1014, 1209, 1255, 1506, 1612, 1690, 1860, 2015, 2028, 2418, 2510, 2535, 3012, 3263, 3380, 3765, 4030, 4836, 5020, 5070, 5239, 6045, 6526, 7530, 7781, 8060, 9789, 10140, 10478, 12090, 13052, 15060, 15562, 15717, 16315, 19578, 20956, 23343, 24180, 26195, 31124, 31434, 32630, 38905, 39156, 42419, 46686, 48945, 52390, 62868, 65260, 77810, 78585, 84838, 93372, 97890, 101153, 104780, 116715, 127257, 155620, 157170, 169676, 195780, 202306, 212095, 233430, 254514, 303459, 314340, 404612, 424190, 466860, 505765, 509028, 606918, 636285, 848380, 1011530, 1213836, 1272570, 1314989, 1517295, 2023060, 2545140, 2629978, 3034590, 3944967, 5259956, 6069180, 6574945, 7889934, 13149890, 15779868, 19724835, 26299780, 39449670, 78899340]

約数ペア:

[(1, 78899340), (2, 39449670), (3, 26299780), (4, 19724835), (5, 15779868), (6, 13149890), (10, 7889934), (12, 6574945), (13, 6069180), (15, 5259956), (20, 3944967), (26, 3034590), (30, 2629978), (31, 2545140), (39, 2023060), (52, 1517295), (60, 1314989), (62, 1272570), (65, 1213836), (78, 1011530), (93, 848380), (124, 636285), (130, 606918), (155, 509028), (156, 505765), (169, 466860), (186, 424190), (195, 404612), (251, 314340), (260, 303459), (310, 254514), (338, 233430), (372, 212095), (390, 202306), (403, 195780), (465, 169676), (502, 157170), (507, 155620), (620, 127257), (676, 116715), (753, 104780), (780, 101153), (806, 97890), (845, 93372), (930, 84838), (1004, 78585), (1014, 77810), (1209, 65260), (1255, 62868), (1506, 52390), (1612, 48945), (1690, 46686), (1860, 42419), (2015, 39156), (2028, 38905), (2418, 32630), (2510, 31434), (2535, 31124), (3012, 26195), (3263, 24180), (3380, 23343), (3765, 20956), (4030, 19578), (4836, 16315), (5020, 15717), (5070, 15562), (5239, 15060), (6045, 13052), (6526, 12090), (7530, 10478), (7781, 10140), (8060, 9789)]