208712720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2251}}^1$

素因数の和:2344

約数の個数: 80

約数和(自身を含む): 519401280

約数和(自身を除く): 310688560

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, 2251, 2318, 2440, 4502, 4636, 4880, 5795, 9004, 9272, 11255, 11590, 18008, 18544, 22510, 23180, 36016, 42769, 45020, 46360, 85538, 90040, 92720, 137311, 171076, 180080, 213845, 274622, 342152, 427690, 549244, 684304, 686555, 855380, 1098488, 1373110, 1710760, 2196976, 2608909, 2746220, 3421520, 5217818, 5492440, 10435636, 10984880, 13044545, 20871272, 26089090, 41742544, 52178180, 104356360, 208712720]

約数ペア:

[(1, 208712720), (2, 104356360), (4, 52178180), (5, 41742544), (8, 26089090), (10, 20871272), (16, 13044545), (19, 10984880), (20, 10435636), (38, 5492440), (40, 5217818), (61, 3421520), (76, 2746220), (80, 2608909), (95, 2196976), (122, 1710760), (152, 1373110), (190, 1098488), (244, 855380), (304, 686555), (305, 684304), (380, 549244), (488, 427690), (610, 342152), (760, 274622), (976, 213845), (1159, 180080), (1220, 171076), (1520, 137311), (2251, 92720), (2318, 90040), (2440, 85538), (4502, 46360), (4636, 45020), (4880, 42769), (5795, 36016), (9004, 23180), (9272, 22510), (11255, 18544), (11590, 18008)]