20149661480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{17123}}^1$

素因数の和:17251

約数の個数: 128

約数和(自身を含む): 51092536320

約数和(自身を除く): 30942874840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 73, 104, 124, 130, 146, 155, 248, 260, 292, 310, 365, 403, 520, 584, 620, 730, 806, 949, 1240, 1460, 1612, 1898, 2015, 2263, 2920, 3224, 3796, 4030, 4526, 4745, 7592, 8060, 9052, 9490, 11315, 16120, 17123, 18104, 18980, 22630, 29419, 34246, 37960, 45260, 58838, 68492, 85615, 90520, 117676, 136984, 147095, 171230, 222599, 235352, 294190, 342460, 445198, 530813, 588380, 684920, 890396, 1061626, 1112995, 1176760, 1249979, 1780792, 2123252, 2225990, 2499958, 2654065, 4246504, 4451980, 4999916, 5308130, 6249895, 6900569, 8903960, 9999832, 10616260, 12499790, 13801138, 16249727, 21232520, 24999580, 27602276, 32499454, 34502845, 38749349, 49999160, 55204552, 64998908, 69005690, 77498698, 81248635, 129997816, 138011380, 154997396, 162497270, 193746745, 276022760, 309994792, 324994540, 387493490, 503741537, 649989080, 774986980, 1007483074, 1549973960, 2014966148, 2518707685, 4029932296, 5037415370, 10074830740, 20149661480]

約数ペア:

[(1, 20149661480), (2, 10074830740), (4, 5037415370), (5, 4029932296), (8, 2518707685), (10, 2014966148), (13, 1549973960), (20, 1007483074), (26, 774986980), (31, 649989080), (40, 503741537), (52, 387493490), (62, 324994540), (65, 309994792), (73, 276022760), (104, 193746745), (124, 162497270), (130, 154997396), (146, 138011380), (155, 129997816), (248, 81248635), (260, 77498698), (292, 69005690), (310, 64998908), (365, 55204552), (403, 49999160), (520, 38749349), (584, 34502845), (620, 32499454), (730, 27602276), (806, 24999580), (949, 21232520), (1240, 16249727), (1460, 13801138), (1612, 12499790), (1898, 10616260), (2015, 9999832), (2263, 8903960), (2920, 6900569), (3224, 6249895), (3796, 5308130), (4030, 4999916), (4526, 4451980), (4745, 4246504), (7592, 2654065), (8060, 2499958), (9052, 2225990), (9490, 2123252), (11315, 1780792), (16120, 1249979), (17123, 1176760), (18104, 1112995), (18980, 1061626), (22630, 890396), (29419, 684920), (34246, 588380), (37960, 530813), (45260, 445198), (58838, 342460), (68492, 294190), (85615, 235352), (90520, 222599), (117676, 171230), (136984, 147095)]