21398027920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{3187}}^1$

素因数の和:3353

約数の個数: 160

約数和(自身を含む): 53794056960

約数和(自身を除く): 32396029040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 41, 46, 80, 82, 89, 92, 115, 164, 178, 184, 205, 230, 328, 356, 368, 410, 445, 460, 656, 712, 820, 890, 920, 943, 1424, 1640, 1780, 1840, 1886, 2047, 3187, 3280, 3560, 3649, 3772, 4094, 4715, 6374, 7120, 7298, 7544, 8188, 9430, 10235, 12748, 14596, 15088, 15935, 16376, 18245, 18860, 20470, 25496, 29192, 31870, 32752, 36490, 37720, 40940, 50992, 58384, 63740, 72980, 73301, 75440, 81880, 83927, 127480, 130667, 145960, 146602, 163760, 167854, 254960, 261334, 283643, 291920, 293204, 335708, 366505, 419635, 522668, 567286, 586408, 653335, 671416, 733010, 839270, 1045336, 1134572, 1172816, 1306670, 1342832, 1418215, 1466020, 1678540, 2090672, 2269144, 2613340, 2836430, 2932040, 3005341, 3357080, 4538288, 5226680, 5672860, 5864080, 6010682, 6523789, 6714160, 10453360, 11345720, 11629363, 12021364, 13047578, 15026705, 22691440, 23258726, 24042728, 26095156, 30053410, 32618945, 46517452, 48085456, 52190312, 58146815, 60106820, 65237890, 93034904, 104380624, 116293630, 120213640, 130475780, 186069808, 232587260, 240427280, 260951560, 267475349, 465174520, 521903120, 534950698, 930349040, 1069901396, 1337376745, 2139802792, 2674753490, 4279605584, 5349506980, 10699013960, 21398027920]

約数ペア:

[(1, 21398027920), (2, 10699013960), (4, 5349506980), (5, 4279605584), (8, 2674753490), (10, 2139802792), (16, 1337376745), (20, 1069901396), (23, 930349040), (40, 534950698), (41, 521903120), (46, 465174520), (80, 267475349), (82, 260951560), (89, 240427280), (92, 232587260), (115, 186069808), (164, 130475780), (178, 120213640), (184, 116293630), (205, 104380624), (230, 93034904), (328, 65237890), (356, 60106820), (368, 58146815), (410, 52190312), (445, 48085456), (460, 46517452), (656, 32618945), (712, 30053410), (820, 26095156), (890, 24042728), (920, 23258726), (943, 22691440), (1424, 15026705), (1640, 13047578), (1780, 12021364), (1840, 11629363), (1886, 11345720), (2047, 10453360), (3187, 6714160), (3280, 6523789), (3560, 6010682), (3649, 5864080), (3772, 5672860), (4094, 5226680), (4715, 4538288), (6374, 3357080), (7120, 3005341), (7298, 2932040), (7544, 2836430), (8188, 2613340), (9430, 2269144), (10235, 2090672), (12748, 1678540), (14596, 1466020), (15088, 1418215), (15935, 1342832), (16376, 1306670), (18245, 1172816), (18860, 1134572), (20470, 1045336), (25496, 839270), (29192, 733010), (31870, 671416), (32752, 653335), (36490, 586408), (37720, 567286), (40940, 522668), (50992, 419635), (58384, 366505), (63740, 335708), (72980, 293204), (73301, 291920), (75440, 283643), (81880, 261334), (83927, 254960), (127480, 167854), (130667, 163760), (145960, 146602)]