20459460

素因数分解:

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

素因数の和:6985

約数の個数: 72

約数和(自身を含む): 66648960

約数和(自身を除く): 46189500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6959, 13918, 20877, 27836, 34795, 41754, 48713, 69590, 83508, 97426, 104385, 139180, 146139, 194852, 208770, 243565, 292278, 340991, 417540, 487130, 584556, 681982, 730695, 974260, 1022973, 1363964, 1461390, 1704955, 2045946, 2922780, 3409910, 4091892, 5114865, 6819820, 10229730, 20459460]

約数ペア:

[(1, 20459460), (2, 10229730), (3, 6819820), (4, 5114865), (5, 4091892), (6, 3409910), (7, 2922780), (10, 2045946), (12, 1704955), (14, 1461390), (15, 1363964), (20, 1022973), (21, 974260), (28, 730695), (30, 681982), (35, 584556), (42, 487130), (49, 417540), (60, 340991), (70, 292278), (84, 243565), (98, 208770), (105, 194852), (140, 146139), (147, 139180), (196, 104385), (210, 97426), (245, 83508), (294, 69590), (420, 48713), (490, 41754), (588, 34795), (735, 27836), (980, 20877), (1470, 13918), (2940, 6959)]