20565386075

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{383}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 28232478720

約数和(自身を除く): 7667092645

約数列:

[1, 5, 13, 25, 65, 71, 169, 179, 325, 355, 383, 845, 895, 923, 1775, 1915, 2327, 4225, 4475, 4615, 4979, 9575, 11635, 11999, 12709, 23075, 24895, 27193, 30251, 58175, 59995, 63545, 64727, 68557, 124475, 135965, 151255, 165217, 299975, 317725, 323635, 342785, 353509, 679825, 756275, 826085, 891241, 1618175, 1713925, 1767545, 2147821, 4130425, 4456205, 4595617, 4867547, 8837725, 10739105, 11586133, 22281025, 22978085, 24337735, 53695525, 57930665, 63278111, 114890425, 121688675, 289653325, 316390555, 822615443, 1581952775, 4113077215, 20565386075]

約数ペア:

[(1, 20565386075), (5, 4113077215), (13, 1581952775), (25, 822615443), (65, 316390555), (71, 289653325), (169, 121688675), (179, 114890425), (325, 63278111), (355, 57930665), (383, 53695525), (845, 24337735), (895, 22978085), (923, 22281025), (1775, 11586133), (1915, 10739105), (2327, 8837725), (4225, 4867547), (4475, 4595617), (4615, 4456205), (4979, 4130425), (9575, 2147821), (11635, 1767545), (11999, 1713925), (12709, 1618175), (23075, 891241), (24895, 826085), (27193, 756275), (30251, 679825), (58175, 353509), (59995, 342785), (63545, 323635), (64727, 317725), (68557, 299975), (124475, 165217), (135965, 151255)]