20620440

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:394

約数の個数: 128

約数和(自身を含む): 70084800

約数和(自身を除く): 49464360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 90, 108, 120, 122, 135, 180, 183, 216, 244, 270, 305, 313, 360, 366, 488, 540, 549, 610, 626, 732, 915, 939, 1080, 1098, 1220, 1252, 1464, 1565, 1647, 1830, 1878, 2196, 2440, 2504, 2745, 2817, 3130, 3294, 3660, 3756, 4392, 4695, 5490, 5634, 6260, 6588, 7320, 7512, 8235, 8451, 9390, 10980, 11268, 12520, 13176, 14085, 16470, 16902, 18780, 19093, 21960, 22536, 28170, 32940, 33804, 37560, 38186, 42255, 56340, 57279, 65880, 67608, 76372, 84510, 95465, 112680, 114558, 152744, 169020, 171837, 190930, 229116, 286395, 338040, 343674, 381860, 458232, 515511, 572790, 687348, 763720, 859185, 1031022, 1145580, 1374696, 1718370, 2062044, 2291160, 2577555, 3436740, 4124088, 5155110, 6873480, 10310220, 20620440]

約数ペア:

[(1, 20620440), (2, 10310220), (3, 6873480), (4, 5155110), (5, 4124088), (6, 3436740), (8, 2577555), (9, 2291160), (10, 2062044), (12, 1718370), (15, 1374696), (18, 1145580), (20, 1031022), (24, 859185), (27, 763720), (30, 687348), (36, 572790), (40, 515511), (45, 458232), (54, 381860), (60, 343674), (61, 338040), (72, 286395), (90, 229116), (108, 190930), (120, 171837), (122, 169020), (135, 152744), (180, 114558), (183, 112680), (216, 95465), (244, 84510), (270, 76372), (305, 67608), (313, 65880), (360, 57279), (366, 56340), (488, 42255), (540, 38186), (549, 37560), (610, 33804), (626, 32940), (732, 28170), (915, 22536), (939, 21960), (1080, 19093), (1098, 18780), (1220, 16902), (1252, 16470), (1464, 14085), (1565, 13176), (1647, 12520), (1830, 11268), (1878, 10980), (2196, 9390), (2440, 8451), (2504, 8235), (2745, 7512), (2817, 7320), (3130, 6588), (3294, 6260), (3660, 5634), (3756, 5490), (4392, 4695)]