20104384880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{216829}}^1$

素因数の和:216922

約数の個数: 80

約数和(自身を含む): 50009671200

約数和(自身を除く): 29905286320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 61, 76, 80, 95, 122, 152, 190, 244, 304, 305, 380, 488, 610, 760, 976, 1159, 1220, 1520, 2318, 2440, 4636, 4880, 5795, 9272, 11590, 18544, 23180, 46360, 92720, 216829, 433658, 867316, 1084145, 1734632, 2168290, 3469264, 4119751, 4336580, 8239502, 8673160, 13226569, 16479004, 17346320, 20598755, 26453138, 32958008, 41197510, 52906276, 65916016, 66132845, 82395020, 105812552, 132265690, 164790040, 211625104, 251304811, 264531380, 329580080, 502609622, 529062760, 1005219244, 1058125520, 1256524055, 2010438488, 2513048110, 4020876976, 5026096220, 10052192440, 20104384880]

約数ペア:

[(1, 20104384880), (2, 10052192440), (4, 5026096220), (5, 4020876976), (8, 2513048110), (10, 2010438488), (16, 1256524055), (19, 1058125520), (20, 1005219244), (38, 529062760), (40, 502609622), (61, 329580080), (76, 264531380), (80, 251304811), (95, 211625104), (122, 164790040), (152, 132265690), (190, 105812552), (244, 82395020), (304, 66132845), (305, 65916016), (380, 52906276), (488, 41197510), (610, 32958008), (760, 26453138), (976, 20598755), (1159, 17346320), (1220, 16479004), (1520, 13226569), (2318, 8673160), (2440, 8239502), (4636, 4336580), (4880, 4119751), (5795, 3469264), (9272, 2168290), (11590, 1734632), (18544, 1084145), (23180, 867316), (46360, 433658), (92720, 216829)]