20012880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1367}}^1$

素因数の和:1444

約数の個数: 80

約数和(自身を含む): 63103104

約数和(自身を除く): 43090224

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1367, 1464, 1830, 2440, 2734, 2928, 3660, 4101, 4880, 5468, 6835, 7320, 8202, 10936, 13670, 14640, 16404, 20505, 21872, 27340, 32808, 41010, 54680, 65616, 82020, 83387, 109360, 164040, 166774, 250161, 328080, 333548, 416935, 500322, 667096, 833870, 1000644, 1250805, 1334192, 1667740, 2001288, 2501610, 3335480, 4002576, 5003220, 6670960, 10006440, 20012880]

約数ペア:

[(1, 20012880), (2, 10006440), (3, 6670960), (4, 5003220), (5, 4002576), (6, 3335480), (8, 2501610), (10, 2001288), (12, 1667740), (15, 1334192), (16, 1250805), (20, 1000644), (24, 833870), (30, 667096), (40, 500322), (48, 416935), (60, 333548), (61, 328080), (80, 250161), (120, 166774), (122, 164040), (183, 109360), (240, 83387), (244, 82020), (305, 65616), (366, 54680), (488, 41010), (610, 32808), (732, 27340), (915, 21872), (976, 20505), (1220, 16404), (1367, 14640), (1464, 13670), (1830, 10936), (2440, 8202), (2734, 7320), (2928, 6835), (3660, 5468), (4101, 4880)]