261856504

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 641249280

約数和(自身を除く): 379392776

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 41, 52, 56, 62, 82, 91, 104, 124, 164, 182, 217, 248, 283, 287, 328, 364, 403, 434, 533, 566, 574, 728, 806, 868, 1066, 1132, 1148, 1271, 1612, 1736, 1981, 2132, 2264, 2296, 2542, 2821, 3224, 3679, 3731, 3962, 4264, 5084, 5642, 7358, 7462, 7924, 8773, 8897, 10168, 11284, 11603, 14716, 14924, 15848, 16523, 17546, 17794, 22568, 23206, 25753, 29432, 29848, 33046, 35092, 35588, 46412, 51506, 61411, 66092, 70184, 71176, 81221, 92824, 103012, 114049, 115661, 122822, 132184, 150839, 162442, 206024, 228098, 231322, 245644, 301678, 324884, 359693, 456196, 462644, 491288, 603356, 649768, 719386, 798343, 912392, 925288, 1055873, 1206712, 1438772, 1596686, 2111746, 2517851, 2877544, 3193372, 4223492, 4676009, 5035702, 6386744, 8446984, 9352018, 10071404, 18704036, 20142808, 32732063, 37408072, 65464126, 130928252, 261856504]

約数ペア:

[(1, 261856504), (2, 130928252), (4, 65464126), (7, 37408072), (8, 32732063), (13, 20142808), (14, 18704036), (26, 10071404), (28, 9352018), (31, 8446984), (41, 6386744), (52, 5035702), (56, 4676009), (62, 4223492), (82, 3193372), (91, 2877544), (104, 2517851), (124, 2111746), (164, 1596686), (182, 1438772), (217, 1206712), (248, 1055873), (283, 925288), (287, 912392), (328, 798343), (364, 719386), (403, 649768), (434, 603356), (533, 491288), (566, 462644), (574, 456196), (728, 359693), (806, 324884), (868, 301678), (1066, 245644), (1132, 231322), (1148, 228098), (1271, 206024), (1612, 162442), (1736, 150839), (1981, 132184), (2132, 122822), (2264, 115661), (2296, 114049), (2542, 103012), (2821, 92824), (3224, 81221), (3679, 71176), (3731, 70184), (3962, 66092), (4264, 61411), (5084, 51506), (5642, 46412), (7358, 35588), (7462, 35092), (7924, 33046), (8773, 29848), (8897, 29432), (10168, 25753), (11284, 23206), (11603, 22568), (14716, 17794), (14924, 17546), (15848, 16523)]