21052940900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{22961}}^1$

素因数の和:23201

約数の個数: 72

約数和(自身を含む): 46817956584

約数和(自身を除く): 25765015684

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 173, 212, 265, 346, 530, 692, 865, 1060, 1325, 1730, 2650, 3460, 4325, 5300, 8650, 9169, 17300, 18338, 22961, 36676, 45845, 45922, 91690, 91844, 114805, 183380, 229225, 229610, 458450, 459220, 574025, 916900, 1148050, 1216933, 2296100, 2433866, 3972253, 4867732, 6084665, 7944506, 12169330, 15889012, 19861265, 24338660, 30423325, 39722530, 60846650, 79445060, 99306325, 121693300, 198612650, 210529409, 397225300, 421058818, 842117636, 1052647045, 2105294090, 4210588180, 5263235225, 10526470450, 21052940900]

約数ペア:

[(1, 21052940900), (2, 10526470450), (4, 5263235225), (5, 4210588180), (10, 2105294090), (20, 1052647045), (25, 842117636), (50, 421058818), (53, 397225300), (100, 210529409), (106, 198612650), (173, 121693300), (212, 99306325), (265, 79445060), (346, 60846650), (530, 39722530), (692, 30423325), (865, 24338660), (1060, 19861265), (1325, 15889012), (1730, 12169330), (2650, 7944506), (3460, 6084665), (4325, 4867732), (5300, 3972253), (8650, 2433866), (9169, 2296100), (17300, 1216933), (18338, 1148050), (22961, 916900), (36676, 574025), (45845, 459220), (45922, 458450), (91690, 229610), (91844, 229225), (114805, 183380)]