20858640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7901}}^1$

素因数の和:7928

約数の個数: 80

約数和(自身を含む): 70549056

約数和(自身を除く): 49690416

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 7901, 15802, 23703, 31604, 39505, 47406, 63208, 79010, 86911, 94812, 118515, 126416, 158020, 173822, 189624, 237030, 260733, 316040, 347644, 379248, 434555, 474060, 521466, 632080, 695288, 869110, 948120, 1042932, 1303665, 1390576, 1738220, 1896240, 2085864, 2607330, 3476440, 4171728, 5214660, 6952880, 10429320, 20858640]

約数ペア:

[(1, 20858640), (2, 10429320), (3, 6952880), (4, 5214660), (5, 4171728), (6, 3476440), (8, 2607330), (10, 2085864), (11, 1896240), (12, 1738220), (15, 1390576), (16, 1303665), (20, 1042932), (22, 948120), (24, 869110), (30, 695288), (33, 632080), (40, 521466), (44, 474060), (48, 434555), (55, 379248), (60, 347644), (66, 316040), (80, 260733), (88, 237030), (110, 189624), (120, 173822), (132, 158020), (165, 126416), (176, 118515), (220, 94812), (240, 86911), (264, 79010), (330, 63208), (440, 47406), (528, 39505), (660, 31604), (880, 23703), (1320, 15802), (2640, 7901)]