128977420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{3469}}^1$

素因数の和:3515

約数の個数: 72

約数和(自身を含む): 320045040

約数和(自身を除く): 191067620

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 169, 220, 260, 286, 338, 572, 676, 715, 845, 1430, 1690, 1859, 2860, 3380, 3469, 3718, 6938, 7436, 9295, 13876, 17345, 18590, 34690, 37180, 38159, 45097, 69380, 76318, 90194, 152636, 180388, 190795, 225485, 381590, 450970, 496067, 586261, 763180, 901940, 992134, 1172522, 1984268, 2345044, 2480335, 2931305, 4960670, 5862610, 6448871, 9921340, 11725220, 12897742, 25795484, 32244355, 64488710, 128977420]

約数ペア:

[(1, 128977420), (2, 64488710), (4, 32244355), (5, 25795484), (10, 12897742), (11, 11725220), (13, 9921340), (20, 6448871), (22, 5862610), (26, 4960670), (44, 2931305), (52, 2480335), (55, 2345044), (65, 1984268), (110, 1172522), (130, 992134), (143, 901940), (169, 763180), (220, 586261), (260, 496067), (286, 450970), (338, 381590), (572, 225485), (676, 190795), (715, 180388), (845, 152636), (1430, 90194), (1690, 76318), (1859, 69380), (2860, 45097), (3380, 38159), (3469, 37180), (3718, 34690), (6938, 18590), (7436, 17345), (9295, 13876)]