20437440

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:430

約数の個数: 112

約数和(自身を含む): 66141600

約数和(自身を除く): 45704160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 64, 80, 96, 120, 122, 160, 183, 192, 240, 244, 305, 320, 349, 366, 480, 488, 610, 698, 732, 915, 960, 976, 1047, 1220, 1396, 1464, 1745, 1830, 1952, 2094, 2440, 2792, 2928, 3490, 3660, 3904, 4188, 4880, 5235, 5584, 5856, 6980, 7320, 8376, 9760, 10470, 11168, 11712, 13960, 14640, 16752, 19520, 20940, 21289, 22336, 27920, 29280, 33504, 41880, 42578, 55840, 58560, 63867, 67008, 83760, 85156, 106445, 111680, 127734, 167520, 170312, 212890, 255468, 319335, 335040, 340624, 425780, 510936, 638670, 681248, 851560, 1021872, 1277340, 1362496, 1703120, 2043744, 2554680, 3406240, 4087488, 5109360, 6812480, 10218720, 20437440]

約数ペア:

[(1, 20437440), (2, 10218720), (3, 6812480), (4, 5109360), (5, 4087488), (6, 3406240), (8, 2554680), (10, 2043744), (12, 1703120), (15, 1362496), (16, 1277340), (20, 1021872), (24, 851560), (30, 681248), (32, 638670), (40, 510936), (48, 425780), (60, 340624), (61, 335040), (64, 319335), (80, 255468), (96, 212890), (120, 170312), (122, 167520), (160, 127734), (183, 111680), (192, 106445), (240, 85156), (244, 83760), (305, 67008), (320, 63867), (349, 58560), (366, 55840), (480, 42578), (488, 41880), (610, 33504), (698, 29280), (732, 27920), (915, 22336), (960, 21289), (976, 20940), (1047, 19520), (1220, 16752), (1396, 14640), (1464, 13960), (1745, 11712), (1830, 11168), (1952, 10470), (2094, 9760), (2440, 8376), (2792, 7320), (2928, 6980), (3490, 5856), (3660, 5584), (3904, 5235), (4188, 4880)]