20481660

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1$

素因数の和:337

約数の個数: 120

約数和(自身を含む): 65862720

約数和(自身を除く): 45381060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 47, 54, 60, 81, 90, 94, 108, 135, 141, 162, 180, 188, 235, 269, 270, 282, 324, 405, 423, 470, 538, 540, 564, 705, 807, 810, 846, 940, 1076, 1269, 1345, 1410, 1614, 1620, 1692, 2115, 2421, 2538, 2690, 2820, 3228, 3807, 4035, 4230, 4842, 5076, 5380, 6345, 7263, 7614, 8070, 8460, 9684, 12105, 12643, 12690, 14526, 15228, 16140, 19035, 21789, 24210, 25286, 25380, 29052, 36315, 37929, 38070, 43578, 48420, 50572, 63215, 72630, 75858, 76140, 87156, 108945, 113787, 126430, 145260, 151716, 189645, 217890, 227574, 252860, 341361, 379290, 435780, 455148, 568935, 682722, 758580, 1024083, 1137870, 1365444, 1706805, 2048166, 2275740, 3413610, 4096332, 5120415, 6827220, 10240830, 20481660]

約数ペア:

[(1, 20481660), (2, 10240830), (3, 6827220), (4, 5120415), (5, 4096332), (6, 3413610), (9, 2275740), (10, 2048166), (12, 1706805), (15, 1365444), (18, 1137870), (20, 1024083), (27, 758580), (30, 682722), (36, 568935), (45, 455148), (47, 435780), (54, 379290), (60, 341361), (81, 252860), (90, 227574), (94, 217890), (108, 189645), (135, 151716), (141, 145260), (162, 126430), (180, 113787), (188, 108945), (235, 87156), (269, 76140), (270, 75858), (282, 72630), (324, 63215), (405, 50572), (423, 48420), (470, 43578), (538, 38070), (540, 37929), (564, 36315), (705, 29052), (807, 25380), (810, 25286), (846, 24210), (940, 21789), (1076, 19035), (1269, 16140), (1345, 15228), (1410, 14526), (1614, 12690), (1620, 12643), (1692, 12105), (2115, 9684), (2421, 8460), (2538, 8070), (2690, 7614), (2820, 7263), (3228, 6345), (3807, 5380), (4035, 5076), (4230, 4842)]