20905080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:669

約数の個数: 128

約数和(自身を含む): 73543680

約数和(自身を除く): 52638600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 105, 120, 123, 140, 164, 168, 205, 210, 246, 280, 287, 328, 410, 420, 492, 574, 607, 615, 820, 840, 861, 984, 1148, 1214, 1230, 1435, 1640, 1722, 1821, 2296, 2428, 2460, 2870, 3035, 3444, 3642, 4249, 4305, 4856, 4920, 5740, 6070, 6888, 7284, 8498, 8610, 9105, 11480, 12140, 12747, 14568, 16996, 17220, 18210, 21245, 24280, 24887, 25494, 33992, 34440, 36420, 42490, 49774, 50988, 63735, 72840, 74661, 84980, 99548, 101976, 124435, 127470, 149322, 169960, 174209, 199096, 248870, 254940, 298644, 348418, 373305, 497740, 509880, 522627, 597288, 696836, 746610, 871045, 995480, 1045254, 1393672, 1493220, 1742090, 2090508, 2613135, 2986440, 3484180, 4181016, 5226270, 6968360, 10452540, 20905080]

約数ペア:

[(1, 20905080), (2, 10452540), (3, 6968360), (4, 5226270), (5, 4181016), (6, 3484180), (7, 2986440), (8, 2613135), (10, 2090508), (12, 1742090), (14, 1493220), (15, 1393672), (20, 1045254), (21, 995480), (24, 871045), (28, 746610), (30, 696836), (35, 597288), (40, 522627), (41, 509880), (42, 497740), (56, 373305), (60, 348418), (70, 298644), (82, 254940), (84, 248870), (105, 199096), (120, 174209), (123, 169960), (140, 149322), (164, 127470), (168, 124435), (205, 101976), (210, 99548), (246, 84980), (280, 74661), (287, 72840), (328, 63735), (410, 50988), (420, 49774), (492, 42490), (574, 36420), (607, 34440), (615, 33992), (820, 25494), (840, 24887), (861, 24280), (984, 21245), (1148, 18210), (1214, 17220), (1230, 16996), (1435, 14568), (1640, 12747), (1722, 12140), (1821, 11480), (2296, 9105), (2428, 8610), (2460, 8498), (2870, 7284), (3035, 6888), (3444, 6070), (3642, 5740), (4249, 4920), (4305, 4856)]