21173425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 33247872

約数和(自身を除く): 12074447

約数列:

[1, 5, 7, 13, 25, 35, 41, 65, 91, 175, 205, 227, 287, 325, 455, 533, 1025, 1135, 1435, 1589, 2275, 2665, 2951, 3731, 5675, 7175, 7945, 9307, 13325, 14755, 18655, 20657, 39725, 46535, 65149, 73775, 93275, 103285, 120991, 232675, 325745, 516425, 604955, 846937, 1628725, 3024775, 4234685, 21173425]

約数ペア:

[(1, 21173425), (5, 4234685), (7, 3024775), (13, 1628725), (25, 846937), (35, 604955), (41, 516425), (65, 325745), (91, 232675), (175, 120991), (205, 103285), (227, 93275), (287, 73775), (325, 65149), (455, 46535), (533, 39725), (1025, 20657), (1135, 18655), (1435, 14755), (1589, 13325), (2275, 9307), (2665, 7945), (2951, 7175), (3731, 5675)]