20124737680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{829}}^1\times {\mathrm{15971}}^1$

素因数の和:16832

約数の個数: 80

約数和(自身を含む): 49315147200

約数和(自身を除く): 29190409520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 829, 1520, 1658, 3316, 4145, 6632, 8290, 13264, 15751, 15971, 16580, 31502, 31942, 33160, 63004, 63884, 66320, 78755, 79855, 126008, 127768, 157510, 159710, 252016, 255536, 303449, 315020, 319420, 606898, 630040, 638840, 1213796, 1260080, 1277680, 1517245, 2427592, 3034490, 4855184, 6068980, 12137960, 13239959, 24275920, 26479918, 52959836, 66199795, 105919672, 132399590, 211839344, 251559221, 264799180, 503118442, 529598360, 1006236884, 1059196720, 1257796105, 2012473768, 2515592210, 4024947536, 5031184420, 10062368840, 20124737680]

約数ペア:

[(1, 20124737680), (2, 10062368840), (4, 5031184420), (5, 4024947536), (8, 2515592210), (10, 2012473768), (16, 1257796105), (19, 1059196720), (20, 1006236884), (38, 529598360), (40, 503118442), (76, 264799180), (80, 251559221), (95, 211839344), (152, 132399590), (190, 105919672), (304, 66199795), (380, 52959836), (760, 26479918), (829, 24275920), (1520, 13239959), (1658, 12137960), (3316, 6068980), (4145, 4855184), (6632, 3034490), (8290, 2427592), (13264, 1517245), (15751, 1277680), (15971, 1260080), (16580, 1213796), (31502, 638840), (31942, 630040), (33160, 606898), (63004, 319420), (63884, 315020), (66320, 303449), (78755, 255536), (79855, 252016), (126008, 159710), (127768, 157510)]