28282640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{809}}^1$

素因数の和:864

約数の個数: 80

約数和(自身を含む): 72316800

約数和(自身を除く): 44034160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 368, 380, 437, 460, 760, 809, 874, 920, 1520, 1618, 1748, 1840, 2185, 3236, 3496, 4045, 4370, 6472, 6992, 8090, 8740, 12944, 15371, 16180, 17480, 18607, 30742, 32360, 34960, 37214, 61484, 64720, 74428, 76855, 93035, 122968, 148856, 153710, 186070, 245936, 297712, 307420, 353533, 372140, 614840, 707066, 744280, 1229680, 1414132, 1488560, 1767665, 2828264, 3535330, 5656528, 7070660, 14141320, 28282640]

約数ペア:

[(1, 28282640), (2, 14141320), (4, 7070660), (5, 5656528), (8, 3535330), (10, 2828264), (16, 1767665), (19, 1488560), (20, 1414132), (23, 1229680), (38, 744280), (40, 707066), (46, 614840), (76, 372140), (80, 353533), (92, 307420), (95, 297712), (115, 245936), (152, 186070), (184, 153710), (190, 148856), (230, 122968), (304, 93035), (368, 76855), (380, 74428), (437, 64720), (460, 61484), (760, 37214), (809, 34960), (874, 32360), (920, 30742), (1520, 18607), (1618, 17480), (1748, 16180), (1840, 15371), (2185, 12944), (3236, 8740), (3496, 8090), (4045, 6992), (4370, 6472)]