19877000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:184

約数の個数: 128

約数和(自身を含む): 55036800

約数和(自身を除く): 35159800

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 88, 100, 104, 110, 125, 130, 139, 143, 200, 220, 250, 260, 275, 278, 286, 325, 440, 500, 520, 550, 556, 572, 650, 695, 715, 1000, 1100, 1112, 1144, 1300, 1375, 1390, 1430, 1529, 1625, 1807, 2200, 2600, 2750, 2780, 2860, 3058, 3250, 3475, 3575, 3614, 5500, 5560, 5720, 6116, 6500, 6950, 7150, 7228, 7645, 9035, 11000, 12232, 13000, 13900, 14300, 14456, 15290, 17375, 17875, 18070, 19877, 27800, 28600, 30580, 34750, 35750, 36140, 38225, 39754, 45175, 61160, 69500, 71500, 72280, 76450, 79508, 90350, 99385, 139000, 143000, 152900, 159016, 180700, 191125, 198770, 225875, 305800, 361400, 382250, 397540, 451750, 496925, 764500, 795080, 903500, 993850, 1529000, 1807000, 1987700, 2484625, 3975400, 4969250, 9938500, 19877000]

約数ペア:

[(1, 19877000), (2, 9938500), (4, 4969250), (5, 3975400), (8, 2484625), (10, 1987700), (11, 1807000), (13, 1529000), (20, 993850), (22, 903500), (25, 795080), (26, 764500), (40, 496925), (44, 451750), (50, 397540), (52, 382250), (55, 361400), (65, 305800), (88, 225875), (100, 198770), (104, 191125), (110, 180700), (125, 159016), (130, 152900), (139, 143000), (143, 139000), (200, 99385), (220, 90350), (250, 79508), (260, 76450), (275, 72280), (278, 71500), (286, 69500), (325, 61160), (440, 45175), (500, 39754), (520, 38225), (550, 36140), (556, 35750), (572, 34750), (650, 30580), (695, 28600), (715, 27800), (1000, 19877), (1100, 18070), (1112, 17875), (1144, 17375), (1300, 15290), (1375, 14456), (1390, 14300), (1430, 13900), (1529, 13000), (1625, 12232), (1807, 11000), (2200, 9035), (2600, 7645), (2750, 7228), (2780, 7150), (2860, 6950), (3058, 6500), (3250, 6116), (3475, 5720), (3575, 5560), (3614, 5500)]