81837840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{6959}}^1$

素因数の和:6989

約数の個数: 120

約数和(自身を含む): 295159680

約数和(自身を除く): 213321840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 6959, 11760, 13918, 20877, 27836, 34795, 41754, 48713, 55672, 69590, 83508, 97426, 104385, 111344, 139180, 146139, 167016, 194852, 208770, 243565, 278360, 292278, 334032, 340991, 389704, 417540, 487130, 556720, 584556, 681982, 730695, 779408, 835080, 974260, 1022973, 1169112, 1363964, 1461390, 1670160, 1704955, 1948520, 2045946, 2338224, 2727928, 2922780, 3409910, 3897040, 4091892, 5114865, 5455856, 5845560, 6819820, 8183784, 10229730, 11691120, 13639640, 16367568, 20459460, 27279280, 40918920, 81837840]

約数ペア:

[(1, 81837840), (2, 40918920), (3, 27279280), (4, 20459460), (5, 16367568), (6, 13639640), (7, 11691120), (8, 10229730), (10, 8183784), (12, 6819820), (14, 5845560), (15, 5455856), (16, 5114865), (20, 4091892), (21, 3897040), (24, 3409910), (28, 2922780), (30, 2727928), (35, 2338224), (40, 2045946), (42, 1948520), (48, 1704955), (49, 1670160), (56, 1461390), (60, 1363964), (70, 1169112), (80, 1022973), (84, 974260), (98, 835080), (105, 779408), (112, 730695), (120, 681982), (140, 584556), (147, 556720), (168, 487130), (196, 417540), (210, 389704), (240, 340991), (245, 334032), (280, 292278), (294, 278360), (336, 243565), (392, 208770), (420, 194852), (490, 167016), (560, 146139), (588, 139180), (735, 111344), (784, 104385), (840, 97426), (980, 83508), (1176, 69590), (1470, 55672), (1680, 48713), (1960, 41754), (2352, 34795), (2940, 27836), (3920, 20877), (5880, 13918), (6959, 11760)]