20402040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:241

約数の個数: 128

約数和(自身を含む): 66173760

約数和(自身を除く): 45771720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 73, 85, 102, 120, 136, 137, 146, 170, 204, 219, 255, 274, 292, 340, 365, 408, 411, 438, 510, 548, 584, 680, 685, 730, 822, 876, 1020, 1095, 1096, 1241, 1370, 1460, 1644, 1752, 2040, 2055, 2190, 2329, 2482, 2740, 2920, 3288, 3723, 4110, 4380, 4658, 4964, 5480, 6205, 6987, 7446, 8220, 8760, 9316, 9928, 10001, 11645, 12410, 13974, 14892, 16440, 18615, 18632, 20002, 23290, 24820, 27948, 29784, 30003, 34935, 37230, 40004, 46580, 49640, 50005, 55896, 60006, 69870, 74460, 80008, 93160, 100010, 120012, 139740, 148920, 150015, 170017, 200020, 240024, 279480, 300030, 340034, 400040, 510051, 600060, 680068, 850085, 1020102, 1200120, 1360136, 1700170, 2040204, 2550255, 3400340, 4080408, 5100510, 6800680, 10201020, 20402040]

約数ペア:

[(1, 20402040), (2, 10201020), (3, 6800680), (4, 5100510), (5, 4080408), (6, 3400340), (8, 2550255), (10, 2040204), (12, 1700170), (15, 1360136), (17, 1200120), (20, 1020102), (24, 850085), (30, 680068), (34, 600060), (40, 510051), (51, 400040), (60, 340034), (68, 300030), (73, 279480), (85, 240024), (102, 200020), (120, 170017), (136, 150015), (137, 148920), (146, 139740), (170, 120012), (204, 100010), (219, 93160), (255, 80008), (274, 74460), (292, 69870), (340, 60006), (365, 55896), (408, 50005), (411, 49640), (438, 46580), (510, 40004), (548, 37230), (584, 34935), (680, 30003), (685, 29784), (730, 27948), (822, 24820), (876, 23290), (1020, 20002), (1095, 18632), (1096, 18615), (1241, 16440), (1370, 14892), (1460, 13974), (1644, 12410), (1752, 11645), (2040, 10001), (2055, 9928), (2190, 9316), (2329, 8760), (2482, 8220), (2740, 7446), (2920, 6987), (3288, 6205), (3723, 5480), (4110, 4964), (4380, 4658)]