20047667080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{31723}}^1$

素因数の和:31839

約数の個数: 128

約数和(自身を含む): 53814055680

約数和(自身を除く): 33766388600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 61, 70, 74, 122, 140, 148, 185, 244, 259, 280, 296, 305, 370, 427, 488, 518, 610, 740, 854, 1036, 1220, 1295, 1480, 1708, 2072, 2135, 2257, 2440, 2590, 3416, 4270, 4514, 5180, 8540, 9028, 10360, 11285, 15799, 17080, 18056, 22570, 31598, 31723, 45140, 63196, 63446, 78995, 90280, 126392, 126892, 157990, 158615, 222061, 253784, 315980, 317230, 444122, 631960, 634460, 888244, 1110305, 1173751, 1268920, 1776488, 1935103, 2220610, 2347502, 3870206, 4441220, 4695004, 5868755, 7740412, 8216257, 8882440, 9390008, 9675515, 11737510, 13545721, 15480824, 16432514, 19351030, 23475020, 27091442, 32865028, 38702060, 41081285, 46950040, 54182884, 65730056, 67728605, 71598811, 77404120, 82162570, 108365768, 135457210, 143197622, 164325140, 270914420, 286395244, 328650280, 357994055, 501191677, 541828840, 572790488, 715988110, 1002383354, 1431976220, 2004766708, 2505958385, 2863952440, 4009533416, 5011916770, 10023833540, 20047667080]

約数ペア:

[(1, 20047667080), (2, 10023833540), (4, 5011916770), (5, 4009533416), (7, 2863952440), (8, 2505958385), (10, 2004766708), (14, 1431976220), (20, 1002383354), (28, 715988110), (35, 572790488), (37, 541828840), (40, 501191677), (56, 357994055), (61, 328650280), (70, 286395244), (74, 270914420), (122, 164325140), (140, 143197622), (148, 135457210), (185, 108365768), (244, 82162570), (259, 77404120), (280, 71598811), (296, 67728605), (305, 65730056), (370, 54182884), (427, 46950040), (488, 41081285), (518, 38702060), (610, 32865028), (740, 27091442), (854, 23475020), (1036, 19351030), (1220, 16432514), (1295, 15480824), (1480, 13545721), (1708, 11737510), (2072, 9675515), (2135, 9390008), (2257, 8882440), (2440, 8216257), (2590, 7740412), (3416, 5868755), (4270, 4695004), (4514, 4441220), (5180, 3870206), (8540, 2347502), (9028, 2220610), (10360, 1935103), (11285, 1776488), (15799, 1268920), (17080, 1173751), (18056, 1110305), (22570, 888244), (31598, 634460), (31723, 631960), (45140, 444122), (63196, 317230), (63446, 315980), (78995, 253784), (90280, 222061), (126392, 158615), (126892, 157990)]