19891767

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 11903433

約数列:

[1, 3, 7, 21, 29, 87, 89, 203, 267, 367, 609, 623, 1101, 1869, 2569, 2581, 7707, 7743, 10643, 18067, 31929, 32663, 54201, 74501, 97989, 223503, 228641, 685923, 947227, 2841681, 6630589, 19891767]

約数ペア:

[(1, 19891767), (3, 6630589), (7, 2841681), (21, 947227), (29, 685923), (87, 228641), (89, 223503), (203, 97989), (267, 74501), (367, 54201), (609, 32663), (623, 31929), (1101, 18067), (1869, 10643), (2569, 7743), (2581, 7707)]