20778896380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{17021}}^1$

素因数の和:17251

約数の個数: 96

約数和(自身を含む): 49415546880

約数和(自身を除く): 28636650500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 179, 220, 310, 341, 358, 620, 682, 716, 895, 1364, 1705, 1790, 1969, 3410, 3580, 3938, 5549, 6820, 7876, 9845, 11098, 17021, 19690, 22196, 27745, 34042, 39380, 55490, 61039, 68084, 85105, 110980, 122078, 170210, 187231, 244156, 305195, 340420, 374462, 527651, 610390, 748924, 936155, 1055302, 1220780, 1872310, 2110604, 2638255, 3046759, 3744620, 5276510, 5804161, 6093518, 10553020, 11608322, 12187036, 15233795, 23216644, 29020805, 30467590, 33514349, 58041610, 60935180, 67028698, 94449529, 116083220, 134057396, 167571745, 188899058, 335143490, 377798116, 472247645, 670286980, 944495290, 1038944819, 1888990580, 2077889638, 4155779276, 5194724095, 10389448190, 20778896380]

約数ペア:

[(1, 20778896380), (2, 10389448190), (4, 5194724095), (5, 4155779276), (10, 2077889638), (11, 1888990580), (20, 1038944819), (22, 944495290), (31, 670286980), (44, 472247645), (55, 377798116), (62, 335143490), (110, 188899058), (124, 167571745), (155, 134057396), (179, 116083220), (220, 94449529), (310, 67028698), (341, 60935180), (358, 58041610), (620, 33514349), (682, 30467590), (716, 29020805), (895, 23216644), (1364, 15233795), (1705, 12187036), (1790, 11608322), (1969, 10553020), (3410, 6093518), (3580, 5804161), (3938, 5276510), (5549, 3744620), (6820, 3046759), (7876, 2638255), (9845, 2110604), (11098, 1872310), (17021, 1220780), (19690, 1055302), (22196, 936155), (27745, 748924), (34042, 610390), (39380, 527651), (55490, 374462), (61039, 340420), (68084, 305195), (85105, 244156), (110980, 187231), (122078, 170210)]