21000852470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2648279}}^1$

素因数の和:2648360

約数の個数: 32

約数和(自身を含む): 41376726720

約数和(自身を除く): 20375874250

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 3965, 7930, 2648279, 5296558, 13241395, 26482790, 34427627, 68855254, 161545019, 172138135, 323090038, 344276270, 807725095, 1615450190, 2100085247, 4200170494, 10500426235, 21000852470]

約数ペア:

[(1, 21000852470), (2, 10500426235), (5, 4200170494), (10, 2100085247), (13, 1615450190), (26, 807725095), (61, 344276270), (65, 323090038), (122, 172138135), (130, 161545019), (305, 68855254), (610, 34427627), (793, 26482790), (1586, 13241395), (3965, 5296558), (7930, 2648279)]