1261239720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{21851}}^1$

素因数の和:21915

約数の個数: 128

約数和(自身を含む): 4185095040

約数和(自身を除く): 2923855320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 37, 39, 40, 52, 60, 65, 74, 78, 104, 111, 120, 130, 148, 156, 185, 195, 222, 260, 296, 312, 370, 390, 444, 481, 520, 555, 740, 780, 888, 962, 1110, 1443, 1480, 1560, 1924, 2220, 2405, 2886, 3848, 4440, 4810, 5772, 7215, 9620, 11544, 14430, 19240, 21851, 28860, 43702, 57720, 65553, 87404, 109255, 131106, 174808, 218510, 262212, 284063, 327765, 437020, 524424, 568126, 655530, 808487, 852189, 874040, 1136252, 1311060, 1420315, 1616974, 1704378, 2272504, 2425461, 2622120, 2840630, 3233948, 3408756, 4042435, 4260945, 4850922, 5681260, 6467896, 6817512, 8084870, 8521890, 9701844, 10510331, 11362520, 12127305, 16169740, 17043780, 19403688, 21020662, 24254610, 31530993, 32339480, 34087560, 42041324, 48509220, 52551655, 63061986, 84082648, 97018440, 105103310, 126123972, 157654965, 210206620, 252247944, 315309930, 420413240, 630619860, 1261239720]

約数ペア:

[(1, 1261239720), (2, 630619860), (3, 420413240), (4, 315309930), (5, 252247944), (6, 210206620), (8, 157654965), (10, 126123972), (12, 105103310), (13, 97018440), (15, 84082648), (20, 63061986), (24, 52551655), (26, 48509220), (30, 42041324), (37, 34087560), (39, 32339480), (40, 31530993), (52, 24254610), (60, 21020662), (65, 19403688), (74, 17043780), (78, 16169740), (104, 12127305), (111, 11362520), (120, 10510331), (130, 9701844), (148, 8521890), (156, 8084870), (185, 6817512), (195, 6467896), (222, 5681260), (260, 4850922), (296, 4260945), (312, 4042435), (370, 3408756), (390, 3233948), (444, 2840630), (481, 2622120), (520, 2425461), (555, 2272504), (740, 1704378), (780, 1616974), (888, 1420315), (962, 1311060), (1110, 1136252), (1443, 874040), (1480, 852189), (1560, 808487), (1924, 655530), (2220, 568126), (2405, 524424), (2886, 437020), (3848, 327765), (4440, 284063), (4810, 262212), (5772, 218510), (7215, 174808), (9620, 131106), (11544, 109255), (14430, 87404), (19240, 65553), (21851, 57720), (28860, 43702)]