51639140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 137894400

約数和(自身を除く): 86255260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 29, 35, 46, 49, 58, 70, 79, 92, 98, 115, 116, 140, 145, 158, 161, 196, 203, 230, 245, 290, 316, 322, 395, 406, 460, 490, 553, 580, 644, 667, 790, 805, 812, 980, 1015, 1106, 1127, 1334, 1421, 1580, 1610, 1817, 2030, 2212, 2254, 2291, 2668, 2765, 2842, 3220, 3335, 3634, 3871, 4060, 4508, 4582, 4669, 5530, 5635, 5684, 6670, 7105, 7268, 7742, 9085, 9164, 9338, 11060, 11270, 11455, 12719, 13340, 14210, 15484, 16037, 18170, 18676, 19355, 22540, 22910, 23345, 25438, 28420, 32074, 32683, 36340, 38710, 45820, 46690, 50876, 52693, 63595, 64148, 65366, 77420, 80185, 89033, 93380, 105386, 112259, 127190, 130732, 160370, 163415, 178066, 210772, 224518, 254380, 263465, 320740, 326830, 356132, 368851, 445165, 449036, 526930, 561295, 653660, 737702, 890330, 1053860, 1122590, 1475404, 1780660, 1844255, 2245180, 2581957, 3688510, 5163914, 7377020, 10327828, 12909785, 25819570, 51639140]

約数ペア:

[(1, 51639140), (2, 25819570), (4, 12909785), (5, 10327828), (7, 7377020), (10, 5163914), (14, 3688510), (20, 2581957), (23, 2245180), (28, 1844255), (29, 1780660), (35, 1475404), (46, 1122590), (49, 1053860), (58, 890330), (70, 737702), (79, 653660), (92, 561295), (98, 526930), (115, 449036), (116, 445165), (140, 368851), (145, 356132), (158, 326830), (161, 320740), (196, 263465), (203, 254380), (230, 224518), (245, 210772), (290, 178066), (316, 163415), (322, 160370), (395, 130732), (406, 127190), (460, 112259), (490, 105386), (553, 93380), (580, 89033), (644, 80185), (667, 77420), (790, 65366), (805, 64148), (812, 63595), (980, 52693), (1015, 50876), (1106, 46690), (1127, 45820), (1334, 38710), (1421, 36340), (1580, 32683), (1610, 32074), (1817, 28420), (2030, 25438), (2212, 23345), (2254, 22910), (2291, 22540), (2668, 19355), (2765, 18676), (2842, 18170), (3220, 16037), (3335, 15484), (3634, 14210), (3871, 13340), (4060, 12719), (4508, 11455), (4582, 11270), (4669, 11060), (5530, 9338), (5635, 9164), (5684, 9085), (6670, 7742), (7105, 7268)]