20199378980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1\times {\mathrm{7643}}^1$

素因数の和:7997

約数の個数: 96

約数和(自身を含む): 47571608448

約数和(自身を除く): 27372229468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 293, 410, 451, 586, 820, 902, 1172, 1465, 1804, 2255, 2930, 3223, 4510, 5860, 6446, 7643, 9020, 12013, 12892, 15286, 16115, 24026, 30572, 32230, 38215, 48052, 60065, 64460, 76430, 84073, 120130, 132143, 152860, 168146, 240260, 264286, 313363, 336292, 420365, 528572, 626726, 660715, 840730, 1253452, 1321430, 1566815, 1681460, 2239399, 2642860, 3133630, 3446993, 4478798, 6267260, 6893986, 8957596, 11196995, 13787972, 17234965, 22393990, 24633389, 34469930, 44787980, 49266778, 68939860, 91815359, 98533556, 123166945, 183630718, 246333890, 367261436, 459076795, 492667780, 918153590, 1009968949, 1836307180, 2019937898, 4039875796, 5049844745, 10099689490, 20199378980]

約数ペア:

[(1, 20199378980), (2, 10099689490), (4, 5049844745), (5, 4039875796), (10, 2019937898), (11, 1836307180), (20, 1009968949), (22, 918153590), (41, 492667780), (44, 459076795), (55, 367261436), (82, 246333890), (110, 183630718), (164, 123166945), (205, 98533556), (220, 91815359), (293, 68939860), (410, 49266778), (451, 44787980), (586, 34469930), (820, 24633389), (902, 22393990), (1172, 17234965), (1465, 13787972), (1804, 11196995), (2255, 8957596), (2930, 6893986), (3223, 6267260), (4510, 4478798), (5860, 3446993), (6446, 3133630), (7643, 2642860), (9020, 2239399), (12013, 1681460), (12892, 1566815), (15286, 1321430), (16115, 1253452), (24026, 840730), (30572, 660715), (32230, 626726), (38215, 528572), (48052, 420365), (60065, 336292), (64460, 313363), (76430, 264286), (84073, 240260), (120130, 168146), (132143, 152860)]