20780051880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{2677}}^1\times {\mathrm{9241}}^1$

素因数の和:11939

約数の個数: 128

約数和(自身を含む): 71280218880

約数和(自身を除く): 50500167000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 2677, 5354, 8031, 9241, 10708, 13385, 16062, 18482, 18739, 21416, 26770, 27723, 32124, 36964, 37478, 40155, 46205, 53540, 55446, 56217, 64248, 64687, 73928, 74956, 80310, 92410, 93695, 107080, 110892, 112434, 129374, 138615, 149912, 160620, 184820, 187390, 194061, 221784, 224868, 258748, 277230, 281085, 321240, 323435, 369640, 374780, 388122, 449736, 517496, 554460, 562170, 646870, 749560, 776244, 970305, 1108920, 1124340, 1293740, 1552488, 1940610, 2248680, 2587480, 3881220, 7762440, 24738157, 49476314, 74214471, 98952628, 123690785, 148428942, 173167099, 197905256, 247381570, 296857884, 346334198, 371072355, 494763140, 519501297, 593715768, 692668396, 742144710, 865835495, 989526280, 1039002594, 1385336792, 1484289420, 1731670990, 2078005188, 2597506485, 2968578840, 3463341980, 4156010376, 5195012970, 6926683960, 10390025940, 20780051880]

約数ペア:

[(1, 20780051880), (2, 10390025940), (3, 6926683960), (4, 5195012970), (5, 4156010376), (6, 3463341980), (7, 2968578840), (8, 2597506485), (10, 2078005188), (12, 1731670990), (14, 1484289420), (15, 1385336792), (20, 1039002594), (21, 989526280), (24, 865835495), (28, 742144710), (30, 692668396), (35, 593715768), (40, 519501297), (42, 494763140), (56, 371072355), (60, 346334198), (70, 296857884), (84, 247381570), (105, 197905256), (120, 173167099), (140, 148428942), (168, 123690785), (210, 98952628), (280, 74214471), (420, 49476314), (840, 24738157), (2677, 7762440), (5354, 3881220), (8031, 2587480), (9241, 2248680), (10708, 1940610), (13385, 1552488), (16062, 1293740), (18482, 1124340), (18739, 1108920), (21416, 970305), (26770, 776244), (27723, 749560), (32124, 646870), (36964, 562170), (37478, 554460), (40155, 517496), (46205, 449736), (53540, 388122), (55446, 374780), (56217, 369640), (64248, 323435), (64687, 321240), (73928, 281085), (74956, 277230), (80310, 258748), (92410, 224868), (93695, 221784), (107080, 194061), (110892, 187390), (112434, 184820), (129374, 160620), (138615, 149912)]