19698795

素因数分解:

$3^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{523}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 36621312

約数和(自身を除く): 16922517

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 243, 279, 405, 465, 523, 837, 1215, 1395, 1569, 2511, 2615, 4185, 4707, 7533, 7845, 12555, 14121, 16213, 23535, 37665, 42363, 48639, 70605, 81065, 127089, 145917, 211815, 243195, 437751, 635445, 729585, 1313253, 2188755, 3939759, 6566265, 19698795]

約数ペア:

[(1, 19698795), (3, 6566265), (5, 3939759), (9, 2188755), (15, 1313253), (27, 729585), (31, 635445), (45, 437751), (81, 243195), (93, 211815), (135, 145917), (155, 127089), (243, 81065), (279, 70605), (405, 48639), (465, 42363), (523, 37665), (837, 23535), (1215, 16213), (1395, 14121), (1569, 12555), (2511, 7845), (2615, 7533), (4185, 4707)]