21237480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:232

約数の個数: 192

約数和(自身を含む): 78174720

約数和(自身を除く): 56937240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 31, 33, 36, 40, 44, 45, 55, 60, 62, 66, 72, 88, 90, 93, 99, 110, 120, 124, 132, 155, 165, 173, 180, 186, 198, 220, 248, 264, 279, 310, 330, 341, 346, 360, 372, 396, 440, 465, 495, 519, 558, 620, 660, 682, 692, 744, 792, 865, 930, 990, 1023, 1038, 1116, 1240, 1320, 1364, 1384, 1395, 1557, 1705, 1730, 1860, 1903, 1980, 2046, 2076, 2232, 2595, 2728, 2790, 3069, 3114, 3410, 3460, 3720, 3806, 3960, 4092, 4152, 5115, 5190, 5363, 5580, 5709, 6138, 6228, 6820, 6920, 7612, 7785, 8184, 9515, 10230, 10380, 10726, 11160, 11418, 12276, 12456, 13640, 15224, 15345, 15570, 16089, 17127, 19030, 20460, 20760, 21452, 22836, 24552, 26815, 28545, 30690, 31140, 32178, 34254, 38060, 40920, 42904, 45672, 48267, 53630, 57090, 58993, 61380, 62280, 64356, 68508, 76120, 80445, 85635, 96534, 107260, 114180, 117986, 122760, 128712, 137016, 160890, 171270, 176979, 193068, 214520, 228360, 235972, 241335, 294965, 321780, 342540, 353958, 386136, 471944, 482670, 530937, 589930, 643560, 685080, 707916, 884895, 965340, 1061874, 1179860, 1415832, 1769790, 1930680, 2123748, 2359720, 2654685, 3539580, 4247496, 5309370, 7079160, 10618740, 21237480]

約数ペア:

[(1, 21237480), (2, 10618740), (3, 7079160), (4, 5309370), (5, 4247496), (6, 3539580), (8, 2654685), (9, 2359720), (10, 2123748), (11, 1930680), (12, 1769790), (15, 1415832), (18, 1179860), (20, 1061874), (22, 965340), (24, 884895), (30, 707916), (31, 685080), (33, 643560), (36, 589930), (40, 530937), (44, 482670), (45, 471944), (55, 386136), (60, 353958), (62, 342540), (66, 321780), (72, 294965), (88, 241335), (90, 235972), (93, 228360), (99, 214520), (110, 193068), (120, 176979), (124, 171270), (132, 160890), (155, 137016), (165, 128712), (173, 122760), (180, 117986), (186, 114180), (198, 107260), (220, 96534), (248, 85635), (264, 80445), (279, 76120), (310, 68508), (330, 64356), (341, 62280), (346, 61380), (360, 58993), (372, 57090), (396, 53630), (440, 48267), (465, 45672), (495, 42904), (519, 40920), (558, 38060), (620, 34254), (660, 32178), (682, 31140), (692, 30690), (744, 28545), (792, 26815), (865, 24552), (930, 22836), (990, 21452), (1023, 20760), (1038, 20460), (1116, 19030), (1240, 17127), (1320, 16089), (1364, 15570), (1384, 15345), (1395, 15224), (1557, 13640), (1705, 12456), (1730, 12276), (1860, 11418), (1903, 11160), (1980, 10726), (2046, 10380), (2076, 10230), (2232, 9515), (2595, 8184), (2728, 7785), (2790, 7612), (3069, 6920), (3114, 6820), (3410, 6228), (3460, 6138), (3720, 5709), (3806, 5580), (3960, 5363), (4092, 5190), (4152, 5115)]