127919990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{1489}}^1$

素因数の和:1589

約数の個数: 48

約数和(自身を含む): 256828320

約数和(自身を除く): 128908330

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 121, 142, 242, 355, 605, 710, 781, 1210, 1489, 1562, 2978, 3905, 7445, 7810, 8591, 14890, 16379, 17182, 32758, 42955, 81895, 85910, 105719, 163790, 180169, 211438, 360338, 528595, 900845, 1057190, 1162909, 1801690, 2325818, 5814545, 11629090, 12791999, 25583998, 63959995, 127919990]

約数ペア:

[(1, 127919990), (2, 63959995), (5, 25583998), (10, 12791999), (11, 11629090), (22, 5814545), (55, 2325818), (71, 1801690), (110, 1162909), (121, 1057190), (142, 900845), (242, 528595), (355, 360338), (605, 211438), (710, 180169), (781, 163790), (1210, 105719), (1489, 85910), (1562, 81895), (2978, 42955), (3905, 32758), (7445, 17182), (7810, 16379), (8591, 14890)]