20663760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:245

約数の個数: 160

約数和(自身を含む): 71245440

約数和(自身を除く): 50581680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 37, 39, 40, 48, 52, 60, 65, 74, 78, 80, 104, 111, 120, 130, 148, 156, 179, 185, 195, 208, 222, 240, 260, 296, 312, 358, 370, 390, 444, 481, 520, 537, 555, 592, 624, 716, 740, 780, 888, 895, 962, 1040, 1074, 1110, 1432, 1443, 1480, 1560, 1776, 1790, 1924, 2148, 2220, 2327, 2405, 2685, 2864, 2886, 2960, 3120, 3580, 3848, 4296, 4440, 4654, 4810, 5370, 5772, 6623, 6981, 7160, 7215, 7696, 8592, 8880, 9308, 9620, 10740, 11544, 11635, 13246, 13962, 14320, 14430, 18616, 19240, 19869, 21480, 23088, 23270, 26492, 27924, 28860, 33115, 34905, 37232, 38480, 39738, 42960, 46540, 52984, 55848, 57720, 66230, 69810, 79476, 86099, 93080, 99345, 105968, 111696, 115440, 132460, 139620, 158952, 172198, 186160, 198690, 258297, 264920, 279240, 317904, 344396, 397380, 430495, 516594, 529840, 558480, 688792, 794760, 860990, 1033188, 1291485, 1377584, 1589520, 1721980, 2066376, 2582970, 3443960, 4132752, 5165940, 6887920, 10331880, 20663760]

約数ペア:

[(1, 20663760), (2, 10331880), (3, 6887920), (4, 5165940), (5, 4132752), (6, 3443960), (8, 2582970), (10, 2066376), (12, 1721980), (13, 1589520), (15, 1377584), (16, 1291485), (20, 1033188), (24, 860990), (26, 794760), (30, 688792), (37, 558480), (39, 529840), (40, 516594), (48, 430495), (52, 397380), (60, 344396), (65, 317904), (74, 279240), (78, 264920), (80, 258297), (104, 198690), (111, 186160), (120, 172198), (130, 158952), (148, 139620), (156, 132460), (179, 115440), (185, 111696), (195, 105968), (208, 99345), (222, 93080), (240, 86099), (260, 79476), (296, 69810), (312, 66230), (358, 57720), (370, 55848), (390, 52984), (444, 46540), (481, 42960), (520, 39738), (537, 38480), (555, 37232), (592, 34905), (624, 33115), (716, 28860), (740, 27924), (780, 26492), (888, 23270), (895, 23088), (962, 21480), (1040, 19869), (1074, 19240), (1110, 18616), (1432, 14430), (1443, 14320), (1480, 13962), (1560, 13246), (1776, 11635), (1790, 11544), (1924, 10740), (2148, 9620), (2220, 9308), (2327, 8880), (2405, 8592), (2685, 7696), (2864, 7215), (2886, 7160), (2960, 6981), (3120, 6623), (3580, 5772), (3848, 5370), (4296, 4810), (4440, 4654)]