638993880

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{84523}}^1$

素因数の和:84550

約数の個数: 128

約数和(自身を含む): 2434291200

約数和(自身を除く): 1795297320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 84523, 169046, 253569, 338092, 422615, 507138, 591661, 676184, 760707, 845230, 1014276, 1183322, 1267845, 1521414, 1690460, 1774983, 2028552, 2282121, 2366644, 2535690, 2958305, 3042828, 3380920, 3549966, 3803535, 4564242, 4733288, 5071380, 5324949, 5916610, 6085656, 7099932, 7607070, 8874915, 9128484, 10142760, 10649898, 11410605, 11833220, 14199864, 15214140, 15974847, 17749830, 18256968, 21299796, 22821210, 23666440, 26624745, 30428280, 31949694, 35499660, 42599592, 45642420, 53249490, 63899388, 70999320, 79874235, 91284840, 106498980, 127798776, 159748470, 212997960, 319496940, 638993880]

約数ペア:

[(1, 638993880), (2, 319496940), (3, 212997960), (4, 159748470), (5, 127798776), (6, 106498980), (7, 91284840), (8, 79874235), (9, 70999320), (10, 63899388), (12, 53249490), (14, 45642420), (15, 42599592), (18, 35499660), (20, 31949694), (21, 30428280), (24, 26624745), (27, 23666440), (28, 22821210), (30, 21299796), (35, 18256968), (36, 17749830), (40, 15974847), (42, 15214140), (45, 14199864), (54, 11833220), (56, 11410605), (60, 10649898), (63, 10142760), (70, 9128484), (72, 8874915), (84, 7607070), (90, 7099932), (105, 6085656), (108, 5916610), (120, 5324949), (126, 5071380), (135, 4733288), (140, 4564242), (168, 3803535), (180, 3549966), (189, 3380920), (210, 3042828), (216, 2958305), (252, 2535690), (270, 2366644), (280, 2282121), (315, 2028552), (360, 1774983), (378, 1690460), (420, 1521414), (504, 1267845), (540, 1183322), (630, 1014276), (756, 845230), (840, 760707), (945, 676184), (1080, 591661), (1260, 507138), (1512, 422615), (1890, 338092), (2520, 253569), (3780, 169046), (7560, 84523)]