20316780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:388

約数の個数: 144

約数和(自身を含む): 69608448

約数和(自身を除く): 49291668

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 31, 33, 36, 44, 45, 55, 60, 62, 66, 90, 93, 99, 110, 124, 132, 155, 165, 180, 186, 198, 220, 279, 310, 330, 331, 341, 372, 396, 465, 495, 558, 620, 660, 662, 682, 930, 990, 993, 1023, 1116, 1324, 1364, 1395, 1655, 1705, 1860, 1980, 1986, 2046, 2790, 2979, 3069, 3310, 3410, 3641, 3972, 4092, 4965, 5115, 5580, 5958, 6138, 6620, 6820, 7282, 9930, 10230, 10261, 10923, 11916, 12276, 14564, 14895, 15345, 18205, 19860, 20460, 20522, 21846, 29790, 30690, 30783, 32769, 36410, 41044, 43692, 51305, 54615, 59580, 61380, 61566, 65538, 72820, 92349, 102610, 109230, 112871, 123132, 131076, 153915, 163845, 184698, 205220, 218460, 225742, 307830, 327690, 338613, 369396, 451484, 461745, 564355, 615660, 655380, 677226, 923490, 1015839, 1128710, 1354452, 1693065, 1846980, 2031678, 2257420, 3386130, 4063356, 5079195, 6772260, 10158390, 20316780]

約数ペア:

[(1, 20316780), (2, 10158390), (3, 6772260), (4, 5079195), (5, 4063356), (6, 3386130), (9, 2257420), (10, 2031678), (11, 1846980), (12, 1693065), (15, 1354452), (18, 1128710), (20, 1015839), (22, 923490), (30, 677226), (31, 655380), (33, 615660), (36, 564355), (44, 461745), (45, 451484), (55, 369396), (60, 338613), (62, 327690), (66, 307830), (90, 225742), (93, 218460), (99, 205220), (110, 184698), (124, 163845), (132, 153915), (155, 131076), (165, 123132), (180, 112871), (186, 109230), (198, 102610), (220, 92349), (279, 72820), (310, 65538), (330, 61566), (331, 61380), (341, 59580), (372, 54615), (396, 51305), (465, 43692), (495, 41044), (558, 36410), (620, 32769), (660, 30783), (662, 30690), (682, 29790), (930, 21846), (990, 20522), (993, 20460), (1023, 19860), (1116, 18205), (1324, 15345), (1364, 14895), (1395, 14564), (1655, 12276), (1705, 11916), (1860, 10923), (1980, 10261), (1986, 10230), (2046, 9930), (2790, 7282), (2979, 6820), (3069, 6620), (3310, 6138), (3410, 5958), (3641, 5580), (3972, 5115), (4092, 4965)]