278907720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25541}}^1$

素因数の和:25575

約数の個数: 128

約数和(自身を含む): 1029853440

約数和(自身を除く): 750945720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 10920, 25541, 51082, 76623, 102164, 127705, 153246, 178787, 204328, 255410, 306492, 332033, 357574, 383115, 510820, 536361, 612984, 664066, 715148, 766230, 893935, 996099, 1021640, 1072722, 1328132, 1430296, 1532460, 1660165, 1787870, 1992198, 2145444, 2324231, 2656264, 2681805, 3064920, 3320330, 3575740, 3984396, 4290888, 4648462, 4980495, 5363610, 6640660, 6972693, 7151480, 7968792, 9296924, 9960990, 10727220, 11621155, 13281320, 13945386, 18593848, 19921980, 21454440, 23242310, 27890772, 34863465, 39843960, 46484620, 55781544, 69726930, 92969240, 139453860, 278907720]

約数ペア:

[(1, 278907720), (2, 139453860), (3, 92969240), (4, 69726930), (5, 55781544), (6, 46484620), (7, 39843960), (8, 34863465), (10, 27890772), (12, 23242310), (13, 21454440), (14, 19921980), (15, 18593848), (20, 13945386), (21, 13281320), (24, 11621155), (26, 10727220), (28, 9960990), (30, 9296924), (35, 7968792), (39, 7151480), (40, 6972693), (42, 6640660), (52, 5363610), (56, 4980495), (60, 4648462), (65, 4290888), (70, 3984396), (78, 3575740), (84, 3320330), (91, 3064920), (104, 2681805), (105, 2656264), (120, 2324231), (130, 2145444), (140, 1992198), (156, 1787870), (168, 1660165), (182, 1532460), (195, 1430296), (210, 1328132), (260, 1072722), (273, 1021640), (280, 996099), (312, 893935), (364, 766230), (390, 715148), (420, 664066), (455, 612984), (520, 536361), (546, 510820), (728, 383115), (780, 357574), (840, 332033), (910, 306492), (1092, 255410), (1365, 204328), (1560, 178787), (1820, 153246), (2184, 127705), (2730, 102164), (3640, 76623), (5460, 51082), (10920, 25541)]