211250000

素因数分解:

$2^4\times 5^7\times {\mathrm{13}}^2$

素因数の和:69

約数の個数: 120

約数和(自身を含む): 554002488

約数和(自身を除く): 342752488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 169, 200, 208, 250, 260, 325, 338, 400, 500, 520, 625, 650, 676, 845, 1000, 1040, 1250, 1300, 1352, 1625, 1690, 2000, 2500, 2600, 2704, 3125, 3250, 3380, 4225, 5000, 5200, 6250, 6500, 6760, 8125, 8450, 10000, 12500, 13000, 13520, 15625, 16250, 16900, 21125, 25000, 26000, 31250, 32500, 33800, 40625, 42250, 50000, 62500, 65000, 67600, 78125, 81250, 84500, 105625, 125000, 130000, 156250, 162500, 169000, 203125, 211250, 250000, 312500, 325000, 338000, 406250, 422500, 528125, 625000, 650000, 812500, 845000, 1015625, 1056250, 1250000, 1625000, 1690000, 2031250, 2112500, 2640625, 3250000, 4062500, 4225000, 5281250, 8125000, 8450000, 10562500, 13203125, 16250000, 21125000, 26406250, 42250000, 52812500, 105625000, 211250000]

約数ペア:

[(1, 211250000), (2, 105625000), (4, 52812500), (5, 42250000), (8, 26406250), (10, 21125000), (13, 16250000), (16, 13203125), (20, 10562500), (25, 8450000), (26, 8125000), (40, 5281250), (50, 4225000), (52, 4062500), (65, 3250000), (80, 2640625), (100, 2112500), (104, 2031250), (125, 1690000), (130, 1625000), (169, 1250000), (200, 1056250), (208, 1015625), (250, 845000), (260, 812500), (325, 650000), (338, 625000), (400, 528125), (500, 422500), (520, 406250), (625, 338000), (650, 325000), (676, 312500), (845, 250000), (1000, 211250), (1040, 203125), (1250, 169000), (1300, 162500), (1352, 156250), (1625, 130000), (1690, 125000), (2000, 105625), (2500, 84500), (2600, 81250), (2704, 78125), (3125, 67600), (3250, 65000), (3380, 62500), (4225, 50000), (5000, 42250), (5200, 40625), (6250, 33800), (6500, 32500), (6760, 31250), (8125, 26000), (8450, 25000), (10000, 21125), (12500, 16900), (13000, 16250), (13520, 15625)]