21613900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1$

素因数の和:440

約数の個数: 108

約数和(自身を含む): 59668056

約数和(自身を除く): 38054156

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 49, 50, 55, 70, 77, 98, 100, 110, 140, 154, 175, 196, 220, 245, 275, 308, 350, 385, 401, 490, 539, 550, 700, 770, 802, 980, 1078, 1100, 1225, 1540, 1604, 1925, 2005, 2156, 2450, 2695, 2807, 3850, 4010, 4411, 4900, 5390, 5614, 7700, 8020, 8822, 10025, 10780, 11228, 13475, 14035, 17644, 19649, 20050, 22055, 26950, 28070, 30877, 39298, 40100, 44110, 53900, 56140, 61754, 70175, 78596, 88220, 98245, 110275, 123508, 140350, 154385, 196490, 216139, 220550, 280700, 308770, 392980, 432278, 441100, 491225, 617540, 771925, 864556, 982450, 1080695, 1543850, 1964900, 2161390, 3087700, 4322780, 5403475, 10806950, 21613900]

約数ペア:

[(1, 21613900), (2, 10806950), (4, 5403475), (5, 4322780), (7, 3087700), (10, 2161390), (11, 1964900), (14, 1543850), (20, 1080695), (22, 982450), (25, 864556), (28, 771925), (35, 617540), (44, 491225), (49, 441100), (50, 432278), (55, 392980), (70, 308770), (77, 280700), (98, 220550), (100, 216139), (110, 196490), (140, 154385), (154, 140350), (175, 123508), (196, 110275), (220, 98245), (245, 88220), (275, 78596), (308, 70175), (350, 61754), (385, 56140), (401, 53900), (490, 44110), (539, 40100), (550, 39298), (700, 30877), (770, 28070), (802, 26950), (980, 22055), (1078, 20050), (1100, 19649), (1225, 17644), (1540, 14035), (1604, 13475), (1925, 11228), (2005, 10780), (2156, 10025), (2450, 8822), (2695, 8020), (2807, 7700), (3850, 5614), (4010, 5390), (4411, 4900)]