19359725

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 30533760

約数和(自身を除く): 11174035

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 89, 113, 175, 275, 385, 445, 565, 623, 791, 979, 1243, 1925, 2225, 2825, 3115, 3955, 4895, 6215, 6853, 8701, 10057, 15575, 19775, 24475, 31075, 34265, 43505, 50285, 70399, 110627, 171325, 217525, 251425, 351995, 553135, 774389, 1759975, 2765675, 3871945, 19359725]

約数ペア:

[(1, 19359725), (5, 3871945), (7, 2765675), (11, 1759975), (25, 774389), (35, 553135), (55, 351995), (77, 251425), (89, 217525), (113, 171325), (175, 110627), (275, 70399), (385, 50285), (445, 43505), (565, 34265), (623, 31075), (791, 24475), (979, 19775), (1243, 15575), (1925, 10057), (2225, 8701), (2825, 6853), (3115, 6215), (3955, 4895)]