20990110000

素因数分解:

$2^4\times 5^4\times {\mathrm{283}}^1\times {\mathrm{7417}}^1$

素因数の和:7728

約数の個数: 100

約数和(自身を含む): 51005604232

約数和(自身を除く): 30015494232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 283, 400, 500, 566, 625, 1000, 1132, 1250, 1415, 2000, 2264, 2500, 2830, 4528, 5000, 5660, 7075, 7417, 10000, 11320, 14150, 14834, 22640, 28300, 29668, 35375, 37085, 56600, 59336, 70750, 74170, 113200, 118672, 141500, 148340, 176875, 185425, 283000, 296680, 353750, 370850, 566000, 593360, 707500, 741700, 927125, 1415000, 1483400, 1854250, 2099011, 2830000, 2966800, 3708500, 4198022, 4635625, 7417000, 8396044, 9271250, 10495055, 14834000, 16792088, 18542500, 20990110, 33584176, 37085000, 41980220, 52475275, 74170000, 83960440, 104950550, 167920880, 209901100, 262376375, 419802200, 524752750, 839604400, 1049505500, 1311881875, 2099011000, 2623763750, 4198022000, 5247527500, 10495055000, 20990110000]

約数ペア:

[(1, 20990110000), (2, 10495055000), (4, 5247527500), (5, 4198022000), (8, 2623763750), (10, 2099011000), (16, 1311881875), (20, 1049505500), (25, 839604400), (40, 524752750), (50, 419802200), (80, 262376375), (100, 209901100), (125, 167920880), (200, 104950550), (250, 83960440), (283, 74170000), (400, 52475275), (500, 41980220), (566, 37085000), (625, 33584176), (1000, 20990110), (1132, 18542500), (1250, 16792088), (1415, 14834000), (2000, 10495055), (2264, 9271250), (2500, 8396044), (2830, 7417000), (4528, 4635625), (5000, 4198022), (5660, 3708500), (7075, 2966800), (7417, 2830000), (10000, 2099011), (11320, 1854250), (14150, 1483400), (14834, 1415000), (22640, 927125), (28300, 741700), (29668, 707500), (35375, 593360), (37085, 566000), (56600, 370850), (59336, 353750), (70750, 296680), (74170, 283000), (113200, 185425), (118672, 176875), (141500, 148340)]