18739986520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{30181}}^1$

素因数の和:30273

約数の個数: 96

約数和(自身を含む): 45537394320

約数和(自身を除く): 26797407800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 361, 380, 430, 722, 760, 817, 860, 1444, 1634, 1720, 1805, 2888, 3268, 3610, 4085, 6536, 7220, 8170, 14440, 15523, 16340, 30181, 31046, 32680, 60362, 62092, 77615, 120724, 124184, 150905, 155230, 241448, 301810, 310460, 573439, 603620, 620920, 1146878, 1207240, 1297783, 2293756, 2595566, 2867195, 4587512, 5191132, 5734390, 6488915, 10382264, 10895341, 11468780, 12977830, 21790682, 22937560, 24657877, 25955660, 43581364, 49315754, 51911320, 54476705, 87162728, 98631508, 108953410, 123289385, 197263016, 217906820, 246578770, 435813640, 468499663, 493157540, 936999326, 986315080, 1873998652, 2342498315, 3747997304, 4684996630, 9369993260, 18739986520]

約数ペア:

[(1, 18739986520), (2, 9369993260), (4, 4684996630), (5, 3747997304), (8, 2342498315), (10, 1873998652), (19, 986315080), (20, 936999326), (38, 493157540), (40, 468499663), (43, 435813640), (76, 246578770), (86, 217906820), (95, 197263016), (152, 123289385), (172, 108953410), (190, 98631508), (215, 87162728), (344, 54476705), (361, 51911320), (380, 49315754), (430, 43581364), (722, 25955660), (760, 24657877), (817, 22937560), (860, 21790682), (1444, 12977830), (1634, 11468780), (1720, 10895341), (1805, 10382264), (2888, 6488915), (3268, 5734390), (3610, 5191132), (4085, 4587512), (6536, 2867195), (7220, 2595566), (8170, 2293756), (14440, 1297783), (15523, 1207240), (16340, 1146878), (30181, 620920), (31046, 603620), (32680, 573439), (60362, 310460), (62092, 301810), (77615, 241448), (120724, 155230), (124184, 150905)]