80628800

素因数分解:

$2^6\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:365

約数の個数: 168

約数和(自身を含む): 237353856

約数和(自身を除く): 156725056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 32, 35, 40, 46, 50, 56, 64, 70, 80, 92, 100, 112, 115, 140, 160, 161, 175, 184, 200, 224, 230, 280, 313, 320, 322, 350, 368, 400, 448, 460, 560, 575, 626, 644, 700, 736, 800, 805, 920, 1120, 1150, 1252, 1288, 1400, 1472, 1565, 1600, 1610, 1840, 2191, 2240, 2300, 2504, 2576, 2800, 3130, 3220, 3680, 4025, 4382, 4600, 5008, 5152, 5600, 6260, 6440, 7199, 7360, 7825, 8050, 8764, 9200, 10016, 10304, 10955, 11200, 12520, 12880, 14398, 15650, 16100, 17528, 18400, 20032, 21910, 25040, 25760, 28796, 31300, 32200, 35056, 35995, 36800, 43820, 50080, 50393, 51520, 54775, 57592, 62600, 64400, 70112, 71990, 87640, 100160, 100786, 109550, 115184, 125200, 128800, 140224, 143980, 175280, 179975, 201572, 219100, 230368, 250400, 251965, 257600, 287960, 350560, 359950, 403144, 438200, 460736, 500800, 503930, 575920, 701120, 719900, 806288, 876400, 1007860, 1151840, 1259825, 1439800, 1612576, 1752800, 2015720, 2303680, 2519650, 2879600, 3225152, 3505600, 4031440, 5039300, 5759200, 8062880, 10078600, 11518400, 16125760, 20157200, 40314400, 80628800]

約数ペア:

[(1, 80628800), (2, 40314400), (4, 20157200), (5, 16125760), (7, 11518400), (8, 10078600), (10, 8062880), (14, 5759200), (16, 5039300), (20, 4031440), (23, 3505600), (25, 3225152), (28, 2879600), (32, 2519650), (35, 2303680), (40, 2015720), (46, 1752800), (50, 1612576), (56, 1439800), (64, 1259825), (70, 1151840), (80, 1007860), (92, 876400), (100, 806288), (112, 719900), (115, 701120), (140, 575920), (160, 503930), (161, 500800), (175, 460736), (184, 438200), (200, 403144), (224, 359950), (230, 350560), (280, 287960), (313, 257600), (320, 251965), (322, 250400), (350, 230368), (368, 219100), (400, 201572), (448, 179975), (460, 175280), (560, 143980), (575, 140224), (626, 128800), (644, 125200), (700, 115184), (736, 109550), (800, 100786), (805, 100160), (920, 87640), (1120, 71990), (1150, 70112), (1252, 64400), (1288, 62600), (1400, 57592), (1472, 54775), (1565, 51520), (1600, 50393), (1610, 50080), (1840, 43820), (2191, 36800), (2240, 35995), (2300, 35056), (2504, 32200), (2576, 31300), (2800, 28796), (3130, 25760), (3220, 25040), (3680, 21910), (4025, 20032), (4382, 18400), (4600, 17528), (5008, 16100), (5152, 15650), (5600, 14398), (6260, 12880), (6440, 12520), (7199, 11200), (7360, 10955), (7825, 10304), (8050, 10016), (8764, 9200)]