208415240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^2\times {\mathrm{149}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 551218500

約数和(自身を除く): 342803260

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 121, 136, 149, 170, 187, 220, 242, 289, 298, 340, 374, 440, 484, 578, 596, 605, 680, 745, 748, 935, 968, 1156, 1192, 1210, 1445, 1490, 1496, 1639, 1870, 2057, 2312, 2420, 2533, 2890, 2980, 3179, 3278, 3740, 4114, 4840, 5066, 5780, 5960, 6358, 6556, 7480, 8195, 8228, 10132, 10285, 11560, 12665, 12716, 13112, 15895, 16390, 16456, 18029, 20264, 20570, 25330, 25432, 27863, 31790, 32780, 34969, 36058, 41140, 43061, 50660, 55726, 63580, 65560, 69938, 72116, 82280, 86122, 90145, 101320, 111452, 127160, 139315, 139876, 144232, 172244, 174845, 180290, 215305, 222904, 278630, 279752, 306493, 344488, 349690, 360580, 430610, 473671, 557260, 612986, 699380, 721160, 861220, 947342, 1114520, 1225972, 1398760, 1532465, 1722440, 1894684, 2368355, 2451944, 3064930, 3789368, 4736710, 5210381, 6129860, 9473420, 10420762, 12259720, 18946840, 20841524, 26051905, 41683048, 52103810, 104207620, 208415240]

約数ペア:

[(1, 208415240), (2, 104207620), (4, 52103810), (5, 41683048), (8, 26051905), (10, 20841524), (11, 18946840), (17, 12259720), (20, 10420762), (22, 9473420), (34, 6129860), (40, 5210381), (44, 4736710), (55, 3789368), (68, 3064930), (85, 2451944), (88, 2368355), (110, 1894684), (121, 1722440), (136, 1532465), (149, 1398760), (170, 1225972), (187, 1114520), (220, 947342), (242, 861220), (289, 721160), (298, 699380), (340, 612986), (374, 557260), (440, 473671), (484, 430610), (578, 360580), (596, 349690), (605, 344488), (680, 306493), (745, 279752), (748, 278630), (935, 222904), (968, 215305), (1156, 180290), (1192, 174845), (1210, 172244), (1445, 144232), (1490, 139876), (1496, 139315), (1639, 127160), (1870, 111452), (2057, 101320), (2312, 90145), (2420, 86122), (2533, 82280), (2890, 72116), (2980, 69938), (3179, 65560), (3278, 63580), (3740, 55726), (4114, 50660), (4840, 43061), (5066, 41140), (5780, 36058), (5960, 34969), (6358, 32780), (6556, 31790), (7480, 27863), (8195, 25432), (8228, 25330), (10132, 20570), (10285, 20264), (11560, 18029), (12665, 16456), (12716, 16390), (13112, 15895)]