261553734

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:790

約数の個数: 96

約数和(自身を含む): 650613600

約数和(自身を除く): 389059866

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 89, 114, 117, 171, 178, 234, 247, 267, 342, 494, 534, 661, 741, 801, 1157, 1322, 1482, 1602, 1691, 1983, 2223, 2314, 3382, 3471, 3966, 4446, 5073, 5949, 6942, 8593, 10146, 10413, 11898, 12559, 15219, 17186, 20826, 21983, 25118, 25779, 30438, 37677, 43966, 51558, 58829, 65949, 75354, 77337, 113031, 117658, 131898, 154674, 163267, 176487, 197847, 226062, 326534, 352974, 395694, 489801, 529461, 764777, 979602, 1058922, 1117751, 1469403, 1529554, 2235502, 2294331, 2938806, 3353253, 4588662, 6706506, 6882993, 10059759, 13765986, 14530763, 20119518, 29061526, 43592289, 87184578, 130776867, 261553734]

約数ペア:

[(1, 261553734), (2, 130776867), (3, 87184578), (6, 43592289), (9, 29061526), (13, 20119518), (18, 14530763), (19, 13765986), (26, 10059759), (38, 6882993), (39, 6706506), (57, 4588662), (78, 3353253), (89, 2938806), (114, 2294331), (117, 2235502), (171, 1529554), (178, 1469403), (234, 1117751), (247, 1058922), (267, 979602), (342, 764777), (494, 529461), (534, 489801), (661, 395694), (741, 352974), (801, 326534), (1157, 226062), (1322, 197847), (1482, 176487), (1602, 163267), (1691, 154674), (1983, 131898), (2223, 117658), (2314, 113031), (3382, 77337), (3471, 75354), (3966, 65949), (4446, 58829), (5073, 51558), (5949, 43966), (6942, 37677), (8593, 30438), (10146, 25779), (10413, 25118), (11898, 21983), (12559, 20826), (15219, 17186)]