20174806480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{358727}}^1$

素因数の和:358796

約数の個数: 80

約数和(自身を含む): 50709790080

約数和(自身を除く): 30534983600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 370, 380, 592, 703, 740, 760, 1406, 1480, 1520, 2812, 2960, 3515, 5624, 7030, 11248, 14060, 28120, 56240, 358727, 717454, 1434908, 1793635, 2869816, 3587270, 5739632, 6815813, 7174540, 13272899, 13631626, 14349080, 26545798, 27263252, 28698160, 34079065, 53091596, 54526504, 66364495, 68158130, 106183192, 109053008, 132728990, 136316260, 212366384, 252185081, 265457980, 272632520, 504370162, 530915960, 545265040, 1008740324, 1061831920, 1260925405, 2017480648, 2521850810, 4034961296, 5043701620, 10087403240, 20174806480]

約数ペア:

[(1, 20174806480), (2, 10087403240), (4, 5043701620), (5, 4034961296), (8, 2521850810), (10, 2017480648), (16, 1260925405), (19, 1061831920), (20, 1008740324), (37, 545265040), (38, 530915960), (40, 504370162), (74, 272632520), (76, 265457980), (80, 252185081), (95, 212366384), (148, 136316260), (152, 132728990), (185, 109053008), (190, 106183192), (296, 68158130), (304, 66364495), (370, 54526504), (380, 53091596), (592, 34079065), (703, 28698160), (740, 27263252), (760, 26545798), (1406, 14349080), (1480, 13631626), (1520, 13272899), (2812, 7174540), (2960, 6815813), (3515, 5739632), (5624, 3587270), (7030, 2869816), (11248, 1793635), (14060, 1434908), (28120, 717454), (56240, 358727)]