20306440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:395

約数の個数: 128

約数和(自身を含む): 60134400

約数和(自身を除く): 39827960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 19, 20, 22, 28, 35, 38, 40, 44, 55, 56, 70, 76, 77, 88, 95, 110, 133, 140, 152, 154, 190, 209, 220, 266, 280, 308, 347, 380, 385, 418, 440, 532, 616, 665, 694, 760, 770, 836, 1045, 1064, 1330, 1388, 1463, 1540, 1672, 1735, 2090, 2429, 2660, 2776, 2926, 3080, 3470, 3817, 4180, 4858, 5320, 5852, 6593, 6940, 7315, 7634, 8360, 9716, 11704, 12145, 13186, 13880, 14630, 15268, 19085, 19432, 24290, 26372, 26719, 29260, 30536, 32965, 38170, 46151, 48580, 52744, 53438, 58520, 65930, 72523, 76340, 92302, 97160, 106876, 131860, 133595, 145046, 152680, 184604, 213752, 230755, 263720, 267190, 290092, 362615, 369208, 461510, 507661, 534380, 580184, 725230, 923020, 1015322, 1068760, 1450460, 1846040, 2030644, 2538305, 2900920, 4061288, 5076610, 10153220, 20306440]

約数ペア:

[(1, 20306440), (2, 10153220), (4, 5076610), (5, 4061288), (7, 2900920), (8, 2538305), (10, 2030644), (11, 1846040), (14, 1450460), (19, 1068760), (20, 1015322), (22, 923020), (28, 725230), (35, 580184), (38, 534380), (40, 507661), (44, 461510), (55, 369208), (56, 362615), (70, 290092), (76, 267190), (77, 263720), (88, 230755), (95, 213752), (110, 184604), (133, 152680), (140, 145046), (152, 133595), (154, 131860), (190, 106876), (209, 97160), (220, 92302), (266, 76340), (280, 72523), (308, 65930), (347, 58520), (380, 53438), (385, 52744), (418, 48580), (440, 46151), (532, 38170), (616, 32965), (665, 30536), (694, 29260), (760, 26719), (770, 26372), (836, 24290), (1045, 19432), (1064, 19085), (1330, 15268), (1388, 14630), (1463, 13880), (1540, 13186), (1672, 12145), (1735, 11704), (2090, 9716), (2429, 8360), (2660, 7634), (2776, 7315), (2926, 6940), (3080, 6593), (3470, 5852), (3817, 5320), (4180, 4858)]