50020000

素因数分解:

$2^5\times 5^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:132

約数の個数: 120

約数和(自身を含む): 128124612

約数和(自身を除く): 78104612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 61, 80, 82, 100, 122, 125, 160, 164, 200, 205, 244, 250, 305, 328, 400, 410, 488, 500, 610, 625, 656, 800, 820, 976, 1000, 1025, 1220, 1250, 1312, 1525, 1640, 1952, 2000, 2050, 2440, 2500, 2501, 3050, 3280, 4000, 4100, 4880, 5000, 5002, 5125, 6100, 6560, 7625, 8200, 9760, 10000, 10004, 10250, 12200, 12505, 15250, 16400, 20000, 20008, 20500, 24400, 25010, 25625, 30500, 32800, 38125, 40016, 41000, 48800, 50020, 51250, 61000, 62525, 76250, 80032, 82000, 100040, 102500, 122000, 125050, 152500, 164000, 200080, 205000, 244000, 250100, 305000, 312625, 400160, 410000, 500200, 610000, 625250, 820000, 1000400, 1220000, 1250500, 1563125, 2000800, 2501000, 3126250, 5002000, 6252500, 10004000, 12505000, 25010000, 50020000]

約数ペア:

[(1, 50020000), (2, 25010000), (4, 12505000), (5, 10004000), (8, 6252500), (10, 5002000), (16, 3126250), (20, 2501000), (25, 2000800), (32, 1563125), (40, 1250500), (41, 1220000), (50, 1000400), (61, 820000), (80, 625250), (82, 610000), (100, 500200), (122, 410000), (125, 400160), (160, 312625), (164, 305000), (200, 250100), (205, 244000), (244, 205000), (250, 200080), (305, 164000), (328, 152500), (400, 125050), (410, 122000), (488, 102500), (500, 100040), (610, 82000), (625, 80032), (656, 76250), (800, 62525), (820, 61000), (976, 51250), (1000, 50020), (1025, 48800), (1220, 41000), (1250, 40016), (1312, 38125), (1525, 32800), (1640, 30500), (1952, 25625), (2000, 25010), (2050, 24400), (2440, 20500), (2500, 20008), (2501, 20000), (3050, 16400), (3280, 15250), (4000, 12505), (4100, 12200), (4880, 10250), (5000, 10004), (5002, 10000), (5125, 9760), (6100, 8200), (6560, 7625)]