51266840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21011}}^1$

素因数の和:21083

約数の個数: 32

約数和(自身を含む): 117246960

約数和(自身を除く): 65980120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 21011, 42022, 84044, 105055, 168088, 210110, 420220, 840440, 1281671, 2563342, 5126684, 6408355, 10253368, 12816710, 25633420, 51266840]

約数ペア:

[(1, 51266840), (2, 25633420), (4, 12816710), (5, 10253368), (8, 6408355), (10, 5126684), (20, 2563342), (40, 1281671), (61, 840440), (122, 420220), (244, 210110), (305, 168088), (488, 105055), (610, 84044), (1220, 42022), (2440, 21011)]