19928880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:419

約数の個数: 120

約数和(自身を含む): 67897440

約数和(自身を除く): 47968560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 89, 90, 120, 144, 178, 180, 240, 267, 311, 356, 360, 445, 534, 622, 712, 720, 801, 890, 933, 1068, 1244, 1335, 1424, 1555, 1602, 1780, 1866, 2136, 2488, 2670, 2799, 3110, 3204, 3560, 3732, 4005, 4272, 4665, 4976, 5340, 5598, 6220, 6408, 7120, 7464, 8010, 9330, 10680, 11196, 12440, 12816, 13995, 14928, 16020, 18660, 21360, 22392, 24880, 27679, 27990, 32040, 37320, 44784, 55358, 55980, 64080, 74640, 83037, 110716, 111960, 138395, 166074, 221432, 223920, 249111, 276790, 332148, 415185, 442864, 498222, 553580, 664296, 830370, 996444, 1107160, 1245555, 1328592, 1660740, 1992888, 2214320, 2491110, 3321480, 3985776, 4982220, 6642960, 9964440, 19928880]

約数ペア:

[(1, 19928880), (2, 9964440), (3, 6642960), (4, 4982220), (5, 3985776), (6, 3321480), (8, 2491110), (9, 2214320), (10, 1992888), (12, 1660740), (15, 1328592), (16, 1245555), (18, 1107160), (20, 996444), (24, 830370), (30, 664296), (36, 553580), (40, 498222), (45, 442864), (48, 415185), (60, 332148), (72, 276790), (80, 249111), (89, 223920), (90, 221432), (120, 166074), (144, 138395), (178, 111960), (180, 110716), (240, 83037), (267, 74640), (311, 64080), (356, 55980), (360, 55358), (445, 44784), (534, 37320), (622, 32040), (712, 27990), (720, 27679), (801, 24880), (890, 22392), (933, 21360), (1068, 18660), (1244, 16020), (1335, 14928), (1424, 13995), (1555, 12816), (1602, 12440), (1780, 11196), (1866, 10680), (2136, 9330), (2488, 8010), (2670, 7464), (2799, 7120), (3110, 6408), (3204, 6220), (3560, 5598), (3732, 5340), (4005, 4976), (4272, 4665)]