20804867720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{121609}}^1$

素因数の和:121687

約数の個数: 128

約数和(自身を含む): 58839782400

約数和(自身を除く): 38034914680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 47, 52, 56, 65, 70, 91, 94, 104, 130, 140, 182, 188, 235, 260, 280, 329, 364, 376, 455, 470, 520, 611, 658, 728, 910, 940, 1222, 1316, 1645, 1820, 1880, 2444, 2632, 3055, 3290, 3640, 4277, 4888, 6110, 6580, 8554, 12220, 13160, 17108, 21385, 24440, 34216, 42770, 85540, 121609, 171080, 243218, 486436, 608045, 851263, 972872, 1216090, 1580917, 1702526, 2432180, 3161834, 3405052, 4256315, 4864360, 5715623, 6323668, 6810104, 7904585, 8512630, 11066419, 11431246, 12647336, 15809170, 17025260, 22132838, 22862492, 28578115, 31618340, 34050520, 40009361, 44265676, 45724984, 55332095, 57156230, 63236680, 74303099, 80018722, 88531352, 110664190, 114312460, 148606198, 160037444, 200046805, 221328380, 228624920, 297212396, 320074888, 371515495, 400093610, 442656760, 520121693, 594424792, 743030990, 800187220, 1040243386, 1486061980, 1600374440, 2080486772, 2600608465, 2972123960, 4160973544, 5201216930, 10402433860, 20804867720]

約数ペア:

[(1, 20804867720), (2, 10402433860), (4, 5201216930), (5, 4160973544), (7, 2972123960), (8, 2600608465), (10, 2080486772), (13, 1600374440), (14, 1486061980), (20, 1040243386), (26, 800187220), (28, 743030990), (35, 594424792), (40, 520121693), (47, 442656760), (52, 400093610), (56, 371515495), (65, 320074888), (70, 297212396), (91, 228624920), (94, 221328380), (104, 200046805), (130, 160037444), (140, 148606198), (182, 114312460), (188, 110664190), (235, 88531352), (260, 80018722), (280, 74303099), (329, 63236680), (364, 57156230), (376, 55332095), (455, 45724984), (470, 44265676), (520, 40009361), (611, 34050520), (658, 31618340), (728, 28578115), (910, 22862492), (940, 22132838), (1222, 17025260), (1316, 15809170), (1645, 12647336), (1820, 11431246), (1880, 11066419), (2444, 8512630), (2632, 7904585), (3055, 6810104), (3290, 6323668), (3640, 5715623), (4277, 4864360), (4888, 4256315), (6110, 3405052), (6580, 3161834), (8554, 2432180), (12220, 1702526), (13160, 1580917), (17108, 1216090), (21385, 972872), (24440, 851263), (34216, 608045), (42770, 486436), (85540, 243218), (121609, 171080)]