20554380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1483}}^1$

素因数の和:1516

約数の個数: 144

約数和(自身を含む): 77785344

約数和(自身を除く): 57230964

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1483, 1540, 1980, 2310, 2772, 2966, 3465, 4449, 4620, 5932, 6930, 7415, 8898, 10381, 13347, 13860, 14830, 16313, 17796, 20762, 22245, 26694, 29660, 31143, 32626, 41524, 44490, 48939, 51905, 53388, 62286, 65252, 66735, 81565, 88980, 93429, 97878, 103810, 114191, 124572, 133470, 146817, 155715, 163130, 186858, 195756, 207620, 228382, 244695, 266940, 293634, 311430, 326260, 342573, 373716, 456764, 467145, 489390, 570955, 587268, 622860, 685146, 734085, 934290, 978780, 1027719, 1141910, 1370292, 1468170, 1712865, 1868580, 2055438, 2283820, 2936340, 3425730, 4110876, 5138595, 6851460, 10277190, 20554380]

約数ペア:

[(1, 20554380), (2, 10277190), (3, 6851460), (4, 5138595), (5, 4110876), (6, 3425730), (7, 2936340), (9, 2283820), (10, 2055438), (11, 1868580), (12, 1712865), (14, 1468170), (15, 1370292), (18, 1141910), (20, 1027719), (21, 978780), (22, 934290), (28, 734085), (30, 685146), (33, 622860), (35, 587268), (36, 570955), (42, 489390), (44, 467145), (45, 456764), (55, 373716), (60, 342573), (63, 326260), (66, 311430), (70, 293634), (77, 266940), (84, 244695), (90, 228382), (99, 207620), (105, 195756), (110, 186858), (126, 163130), (132, 155715), (140, 146817), (154, 133470), (165, 124572), (180, 114191), (198, 103810), (210, 97878), (220, 93429), (231, 88980), (252, 81565), (308, 66735), (315, 65252), (330, 62286), (385, 53388), (396, 51905), (420, 48939), (462, 44490), (495, 41524), (630, 32626), (660, 31143), (693, 29660), (770, 26694), (924, 22245), (990, 20762), (1155, 17796), (1260, 16313), (1386, 14830), (1483, 13860), (1540, 13347), (1980, 10381), (2310, 8898), (2772, 7415), (2966, 6930), (3465, 5932), (4449, 4620)]