21721167405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{419}}^1\times {\mathrm{827}}^1$

素因数の和:1463

約数の個数: 96

約数和(自身を含む): 43400448000

約数和(自身を除く): 21679280595

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 199, 315, 419, 597, 827, 995, 1257, 1393, 1791, 2095, 2481, 2933, 2985, 3771, 4135, 4179, 5789, 6285, 6965, 7443, 8799, 8955, 12405, 12537, 14665, 17367, 18855, 20895, 26397, 28945, 37215, 43995, 52101, 62685, 83381, 86835, 131985, 164573, 250143, 260505, 346513, 416905, 493719, 583667, 750429, 822865, 1039539, 1152011, 1250715, 1481157, 1732565, 1751001, 2425591, 2468595, 2918335, 3118617, 3456033, 3752145, 5197695, 5253003, 5760055, 7276773, 7405785, 8755005, 10368099, 12127955, 15593085, 17280165, 21830319, 26265015, 36383865, 51840495, 68956087, 109151595, 206868261, 344780435, 482692609, 620604783, 1034341305, 1448077827, 2413463045, 3103023915, 4344233481, 7240389135, 21721167405]

約数ペア:

[(1, 21721167405), (3, 7240389135), (5, 4344233481), (7, 3103023915), (9, 2413463045), (15, 1448077827), (21, 1034341305), (35, 620604783), (45, 482692609), (63, 344780435), (105, 206868261), (199, 109151595), (315, 68956087), (419, 51840495), (597, 36383865), (827, 26265015), (995, 21830319), (1257, 17280165), (1393, 15593085), (1791, 12127955), (2095, 10368099), (2481, 8755005), (2933, 7405785), (2985, 7276773), (3771, 5760055), (4135, 5253003), (4179, 5197695), (5789, 3752145), (6285, 3456033), (6965, 3118617), (7443, 2918335), (8799, 2468595), (8955, 2425591), (12405, 1751001), (12537, 1732565), (14665, 1481157), (17367, 1250715), (18855, 1152011), (20895, 1039539), (26397, 822865), (28945, 750429), (37215, 583667), (43995, 493719), (52101, 416905), (62685, 346513), (83381, 260505), (86835, 250143), (131985, 164573)]