279975488

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:332

約数の個数: 112

約数和(自身を含む): 640080000

約数和(自身を除く): 360104512

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 89, 104, 152, 178, 199, 208, 247, 304, 356, 398, 416, 494, 608, 712, 796, 832, 988, 1157, 1216, 1424, 1592, 1691, 1976, 2314, 2587, 2848, 3184, 3382, 3781, 3952, 4628, 5174, 5696, 6368, 6764, 7562, 7904, 9256, 10348, 12736, 13528, 15124, 15808, 17711, 18512, 20696, 21983, 27056, 30248, 35422, 37024, 41392, 43966, 49153, 54112, 60496, 70844, 74048, 82784, 87932, 98306, 108224, 120992, 141688, 165568, 175864, 196612, 230243, 241984, 283376, 336509, 351728, 393224, 460486, 566752, 673018, 703456, 786448, 920972, 1133504, 1346036, 1406912, 1572896, 1841944, 2692072, 3145792, 3683888, 4374617, 5384144, 7367776, 8749234, 10768288, 14735552, 17498468, 21536576, 34996936, 69993872, 139987744, 279975488]

約数ペア:

[(1, 279975488), (2, 139987744), (4, 69993872), (8, 34996936), (13, 21536576), (16, 17498468), (19, 14735552), (26, 10768288), (32, 8749234), (38, 7367776), (52, 5384144), (64, 4374617), (76, 3683888), (89, 3145792), (104, 2692072), (152, 1841944), (178, 1572896), (199, 1406912), (208, 1346036), (247, 1133504), (304, 920972), (356, 786448), (398, 703456), (416, 673018), (494, 566752), (608, 460486), (712, 393224), (796, 351728), (832, 336509), (988, 283376), (1157, 241984), (1216, 230243), (1424, 196612), (1592, 175864), (1691, 165568), (1976, 141688), (2314, 120992), (2587, 108224), (2848, 98306), (3184, 87932), (3382, 82784), (3781, 74048), (3952, 70844), (4628, 60496), (5174, 54112), (5696, 49153), (6368, 43966), (6764, 41392), (7562, 37024), (7904, 35422), (9256, 30248), (10348, 27056), (12736, 21983), (13528, 20696), (15124, 18512), (15808, 17711)]