128761100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:460

約数の個数: 108

約数和(自身を含む): 319276440

約数和(自身を除く): 190515340

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 169, 190, 247, 260, 325, 338, 380, 401, 475, 494, 650, 676, 802, 845, 950, 988, 1235, 1300, 1604, 1690, 1900, 2005, 2470, 3211, 3380, 4010, 4225, 4940, 5213, 6175, 6422, 7619, 8020, 8450, 10025, 10426, 12350, 12844, 15238, 16055, 16900, 20050, 20852, 24700, 26065, 30476, 32110, 38095, 40100, 52130, 64220, 67769, 76190, 80275, 99047, 104260, 130325, 135538, 152380, 160550, 190475, 198094, 260650, 271076, 321100, 338845, 380950, 396188, 495235, 521300, 677690, 761900, 990470, 1287611, 1355380, 1694225, 1980940, 2476175, 2575222, 3388450, 4952350, 5150444, 6438055, 6776900, 9904700, 12876110, 25752220, 32190275, 64380550, 128761100]

約数ペア:

[(1, 128761100), (2, 64380550), (4, 32190275), (5, 25752220), (10, 12876110), (13, 9904700), (19, 6776900), (20, 6438055), (25, 5150444), (26, 4952350), (38, 3388450), (50, 2575222), (52, 2476175), (65, 1980940), (76, 1694225), (95, 1355380), (100, 1287611), (130, 990470), (169, 761900), (190, 677690), (247, 521300), (260, 495235), (325, 396188), (338, 380950), (380, 338845), (401, 321100), (475, 271076), (494, 260650), (650, 198094), (676, 190475), (802, 160550), (845, 152380), (950, 135538), (988, 130325), (1235, 104260), (1300, 99047), (1604, 80275), (1690, 76190), (1900, 67769), (2005, 64220), (2470, 52130), (3211, 40100), (3380, 38095), (4010, 32110), (4225, 30476), (4940, 26065), (5213, 24700), (6175, 20852), (6422, 20050), (7619, 16900), (8020, 16055), (8450, 15238), (10025, 12844), (10426, 12350)]