19856988

素因数分解:

$2^2\times 3^5\times {\mathrm{31}}^1\times {\mathrm{659}}^1$

素因数の和:709

約数の個数: 72

約数和(自身を含む): 53813760

約数和(自身を除く): 33956772

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 31, 36, 54, 62, 81, 93, 108, 124, 162, 186, 243, 279, 324, 372, 486, 558, 659, 837, 972, 1116, 1318, 1674, 1977, 2511, 2636, 3348, 3954, 5022, 5931, 7533, 7908, 10044, 11862, 15066, 17793, 20429, 23724, 30132, 35586, 40858, 53379, 61287, 71172, 81716, 106758, 122574, 160137, 183861, 213516, 245148, 320274, 367722, 551583, 640548, 735444, 1103166, 1654749, 2206332, 3309498, 4964247, 6618996, 9928494, 19856988]

約数ペア:

[(1, 19856988), (2, 9928494), (3, 6618996), (4, 4964247), (6, 3309498), (9, 2206332), (12, 1654749), (18, 1103166), (27, 735444), (31, 640548), (36, 551583), (54, 367722), (62, 320274), (81, 245148), (93, 213516), (108, 183861), (124, 160137), (162, 122574), (186, 106758), (243, 81716), (279, 71172), (324, 61287), (372, 53379), (486, 40858), (558, 35586), (659, 30132), (837, 23724), (972, 20429), (1116, 17793), (1318, 15066), (1674, 11862), (1977, 10044), (2511, 7908), (2636, 7533), (3348, 5931), (3954, 5022)]