27716980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 59875200

約数和(自身を除く): 32158220

約数列:

[1, 2, 4, 5, 10, 20, 71, 131, 142, 149, 262, 284, 298, 355, 524, 596, 655, 710, 745, 1310, 1420, 1490, 2620, 2980, 9301, 10579, 18602, 19519, 21158, 37204, 39038, 42316, 46505, 52895, 78076, 93010, 97595, 105790, 186020, 195190, 211580, 390380, 1385849, 2771698, 5543396, 6929245, 13858490, 27716980]

約数ペア:

[(1, 27716980), (2, 13858490), (4, 6929245), (5, 5543396), (10, 2771698), (20, 1385849), (71, 390380), (131, 211580), (142, 195190), (149, 186020), (262, 105790), (284, 97595), (298, 93010), (355, 78076), (524, 52895), (596, 46505), (655, 42316), (710, 39038), (745, 37204), (1310, 21158), (1420, 19519), (1490, 18602), (2620, 10579), (2980, 9301)]