19871880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{577}}^1$

素因数の和:639

約数の個数: 128

約数和(自身を含む): 69914880

約数和(自身を除く): 50043000

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, 577, 615, 820, 840, 861, 984, 1148, 1154, 1230, 1435, 1640, 1722, 1731, 2296, 2308, 2460, 2870, 2885, 3444, 3462, 4039, 4305, 4616, 4920, 5740, 5770, 6888, 6924, 8078, 8610, 8655, 11480, 11540, 12117, 13848, 16156, 17220, 17310, 20195, 23080, 23657, 24234, 32312, 34440, 34620, 40390, 47314, 48468, 60585, 69240, 70971, 80780, 94628, 96936, 118285, 121170, 141942, 161560, 165599, 189256, 236570, 242340, 283884, 331198, 354855, 473140, 484680, 496797, 567768, 662396, 709710, 827995, 946280, 993594, 1324792, 1419420, 1655990, 1987188, 2483985, 2838840, 3311980, 3974376, 4967970, 6623960, 9935940, 19871880]

約数ペア:

[(1, 19871880), (2, 9935940), (3, 6623960), (4, 4967970), (5, 3974376), (6, 3311980), (7, 2838840), (8, 2483985), (10, 1987188), (12, 1655990), (14, 1419420), (15, 1324792), (20, 993594), (21, 946280), (24, 827995), (28, 709710), (30, 662396), (35, 567768), (40, 496797), (41, 484680), (42, 473140), (56, 354855), (60, 331198), (70, 283884), (82, 242340), (84, 236570), (105, 189256), (120, 165599), (123, 161560), (140, 141942), (164, 121170), (168, 118285), (205, 96936), (210, 94628), (246, 80780), (280, 70971), (287, 69240), (328, 60585), (410, 48468), (420, 47314), (492, 40390), (574, 34620), (577, 34440), (615, 32312), (820, 24234), (840, 23657), (861, 23080), (984, 20195), (1148, 17310), (1154, 17220), (1230, 16156), (1435, 13848), (1640, 12117), (1722, 11540), (1731, 11480), (2296, 8655), (2308, 8610), (2460, 8078), (2870, 6924), (2885, 6888), (3444, 5770), (3462, 5740), (4039, 4920), (4305, 4616)]