20901840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:189

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 49807920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 47, 48, 51, 60, 68, 80, 85, 94, 102, 109, 120, 136, 141, 170, 188, 204, 218, 235, 240, 255, 272, 282, 327, 340, 376, 408, 436, 470, 510, 545, 564, 654, 680, 705, 752, 799, 816, 872, 940, 1020, 1090, 1128, 1308, 1360, 1410, 1598, 1635, 1744, 1853, 1880, 2040, 2180, 2256, 2397, 2616, 2820, 3196, 3270, 3706, 3760, 3995, 4080, 4360, 4794, 5123, 5232, 5559, 5640, 6392, 6540, 7412, 7990, 8720, 9265, 9588, 10246, 11118, 11280, 11985, 12784, 13080, 14824, 15369, 15980, 18530, 19176, 20492, 22236, 23970, 25615, 26160, 27795, 29648, 30738, 31960, 37060, 38352, 40984, 44472, 47940, 51230, 55590, 61476, 63920, 74120, 76845, 81968, 87091, 88944, 95880, 102460, 111180, 122952, 148240, 153690, 174182, 191760, 204920, 222360, 245904, 261273, 307380, 348364, 409840, 435455, 444720, 522546, 614760, 696728, 870910, 1045092, 1229520, 1306365, 1393456, 1741820, 2090184, 2612730, 3483640, 4180368, 5225460, 6967280, 10450920, 20901840]

約数ペア:

[(1, 20901840), (2, 10450920), (3, 6967280), (4, 5225460), (5, 4180368), (6, 3483640), (8, 2612730), (10, 2090184), (12, 1741820), (15, 1393456), (16, 1306365), (17, 1229520), (20, 1045092), (24, 870910), (30, 696728), (34, 614760), (40, 522546), (47, 444720), (48, 435455), (51, 409840), (60, 348364), (68, 307380), (80, 261273), (85, 245904), (94, 222360), (102, 204920), (109, 191760), (120, 174182), (136, 153690), (141, 148240), (170, 122952), (188, 111180), (204, 102460), (218, 95880), (235, 88944), (240, 87091), (255, 81968), (272, 76845), (282, 74120), (327, 63920), (340, 61476), (376, 55590), (408, 51230), (436, 47940), (470, 44472), (510, 40984), (545, 38352), (564, 37060), (654, 31960), (680, 30738), (705, 29648), (752, 27795), (799, 26160), (816, 25615), (872, 23970), (940, 22236), (1020, 20492), (1090, 19176), (1128, 18530), (1308, 15980), (1360, 15369), (1410, 14824), (1598, 13080), (1635, 12784), (1744, 11985), (1853, 11280), (1880, 11118), (2040, 10246), (2180, 9588), (2256, 9265), (2397, 8720), (2616, 7990), (2820, 7412), (3196, 6540), (3270, 6392), (3706, 5640), (3760, 5559), (3995, 5232), (4080, 5123), (4360, 4794)]