18870537

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 31256064

約数和(自身を除く): 12385527

約数列:

[1, 3, 7, 21, 31, 41, 49, 93, 101, 123, 147, 217, 287, 303, 651, 707, 861, 1271, 1519, 2009, 2121, 3131, 3813, 4141, 4557, 4949, 6027, 8897, 9393, 12423, 14847, 21917, 26691, 28987, 62279, 65751, 86961, 128371, 153419, 186837, 202909, 385113, 460257, 608727, 898597, 2695791, 6290179, 18870537]

約数ペア:

[(1, 18870537), (3, 6290179), (7, 2695791), (21, 898597), (31, 608727), (41, 460257), (49, 385113), (93, 202909), (101, 186837), (123, 153419), (147, 128371), (217, 86961), (287, 65751), (303, 62279), (651, 28987), (707, 26691), (861, 21917), (1271, 14847), (1519, 12423), (2009, 9393), (2121, 8897), (3131, 6027), (3813, 4949), (4141, 4557)]