20450951720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{51061}}^1$

素因数の和:51139

約数の個数: 128

約数和(自身を含む): 52941081600

約数和(自身を除く): 32490129880

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 31, 34, 38, 40, 62, 68, 76, 85, 95, 124, 136, 152, 155, 170, 190, 248, 310, 323, 340, 380, 527, 589, 620, 646, 680, 760, 1054, 1178, 1240, 1292, 1615, 2108, 2356, 2584, 2635, 2945, 3230, 4216, 4712, 5270, 5890, 6460, 10013, 10540, 11780, 12920, 20026, 21080, 23560, 40052, 50065, 51061, 80104, 100130, 102122, 200260, 204244, 255305, 400520, 408488, 510610, 868037, 970159, 1021220, 1582891, 1736074, 1940318, 2042440, 3165782, 3472148, 3880636, 4340185, 4850795, 6331564, 6944296, 7761272, 7914455, 8680370, 9701590, 12663128, 15828910, 16492703, 17360740, 19403180, 26909147, 30074929, 31657820, 32985406, 34721480, 38806360, 53818294, 60149858, 63315640, 65970812, 82463515, 107636588, 120299716, 131941624, 134545735, 150374645, 164927030, 215273176, 240599432, 269091470, 300749290, 329854060, 511273793, 538182940, 601498580, 659708120, 1022547586, 1076365880, 1202997160, 2045095172, 2556368965, 4090190344, 5112737930, 10225475860, 20450951720]

約数ペア:

[(1, 20450951720), (2, 10225475860), (4, 5112737930), (5, 4090190344), (8, 2556368965), (10, 2045095172), (17, 1202997160), (19, 1076365880), (20, 1022547586), (31, 659708120), (34, 601498580), (38, 538182940), (40, 511273793), (62, 329854060), (68, 300749290), (76, 269091470), (85, 240599432), (95, 215273176), (124, 164927030), (136, 150374645), (152, 134545735), (155, 131941624), (170, 120299716), (190, 107636588), (248, 82463515), (310, 65970812), (323, 63315640), (340, 60149858), (380, 53818294), (527, 38806360), (589, 34721480), (620, 32985406), (646, 31657820), (680, 30074929), (760, 26909147), (1054, 19403180), (1178, 17360740), (1240, 16492703), (1292, 15828910), (1615, 12663128), (2108, 9701590), (2356, 8680370), (2584, 7914455), (2635, 7761272), (2945, 6944296), (3230, 6331564), (4216, 4850795), (4712, 4340185), (5270, 3880636), (5890, 3472148), (6460, 3165782), (10013, 2042440), (10540, 1940318), (11780, 1736074), (12920, 1582891), (20026, 1021220), (21080, 970159), (23560, 868037), (40052, 510610), (50065, 408488), (51061, 400520), (80104, 255305), (100130, 204244), (102122, 200260)]