977880020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{61657}}^1$

素因数の和:61740

約数の個数: 48

約数和(自身を含む): 2247804048

約数和(自身を除く): 1269924028

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 7930, 15860, 61657, 123314, 246628, 308285, 616570, 801541, 1233140, 1603082, 3206164, 3761077, 4007705, 7522154, 8015410, 15044308, 16030820, 18805385, 37610770, 48894001, 75221540, 97788002, 195576004, 244470005, 488940010, 977880020]

約数ペア:

[(1, 977880020), (2, 488940010), (4, 244470005), (5, 195576004), (10, 97788002), (13, 75221540), (20, 48894001), (26, 37610770), (52, 18805385), (61, 16030820), (65, 15044308), (122, 8015410), (130, 7522154), (244, 4007705), (260, 3761077), (305, 3206164), (610, 1603082), (793, 1233140), (1220, 801541), (1586, 616570), (3172, 308285), (3965, 246628), (7930, 123314), (15860, 61657)]