20704680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1009}}^1$

素因数の和:1048

約数の個数: 128

約数和(自身を含む): 72720000

約数和(自身を除く): 52015320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1009, 1026, 1080, 1140, 1368, 1710, 2018, 2052, 2280, 2565, 3027, 3420, 4036, 4104, 5045, 5130, 6054, 6840, 8072, 9081, 10090, 10260, 12108, 15135, 18162, 19171, 20180, 20520, 24216, 27243, 30270, 36324, 38342, 40360, 45405, 54486, 57513, 60540, 72648, 76684, 90810, 95855, 108972, 115026, 121080, 136215, 153368, 172539, 181620, 191710, 217944, 230052, 272430, 287565, 345078, 363240, 383420, 460104, 517617, 544860, 575130, 690156, 766840, 862695, 1035234, 1089720, 1150260, 1380312, 1725390, 2070468, 2300520, 2588085, 3450780, 4140936, 5176170, 6901560, 10352340, 20704680]

約数ペア:

[(1, 20704680), (2, 10352340), (3, 6901560), (4, 5176170), (5, 4140936), (6, 3450780), (8, 2588085), (9, 2300520), (10, 2070468), (12, 1725390), (15, 1380312), (18, 1150260), (19, 1089720), (20, 1035234), (24, 862695), (27, 766840), (30, 690156), (36, 575130), (38, 544860), (40, 517617), (45, 460104), (54, 383420), (57, 363240), (60, 345078), (72, 287565), (76, 272430), (90, 230052), (95, 217944), (108, 191710), (114, 181620), (120, 172539), (135, 153368), (152, 136215), (171, 121080), (180, 115026), (190, 108972), (216, 95855), (228, 90810), (270, 76684), (285, 72648), (342, 60540), (360, 57513), (380, 54486), (456, 45405), (513, 40360), (540, 38342), (570, 36324), (684, 30270), (760, 27243), (855, 24216), (1009, 20520), (1026, 20180), (1080, 19171), (1140, 18162), (1368, 15135), (1710, 12108), (2018, 10260), (2052, 10090), (2280, 9081), (2565, 8072), (3027, 6840), (3420, 6054), (4036, 5130), (4104, 5045)]