28503440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2213}}^1$

素因数の和:2256

約数の個数: 80

約数和(自身を含む): 79066368

約数和(自身を除く): 50562928

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2213, 2576, 3220, 4426, 6440, 8852, 11065, 12880, 15491, 17704, 22130, 30982, 35408, 44260, 50899, 61964, 77455, 88520, 101798, 123928, 154910, 177040, 203596, 247856, 254495, 309820, 356293, 407192, 508990, 619640, 712586, 814384, 1017980, 1239280, 1425172, 1781465, 2035960, 2850344, 3562930, 4071920, 5700688, 7125860, 14251720, 28503440]

約数ペア:

[(1, 28503440), (2, 14251720), (4, 7125860), (5, 5700688), (7, 4071920), (8, 3562930), (10, 2850344), (14, 2035960), (16, 1781465), (20, 1425172), (23, 1239280), (28, 1017980), (35, 814384), (40, 712586), (46, 619640), (56, 508990), (70, 407192), (80, 356293), (92, 309820), (112, 254495), (115, 247856), (140, 203596), (161, 177040), (184, 154910), (230, 123928), (280, 101798), (322, 88520), (368, 77455), (460, 61964), (560, 50899), (644, 44260), (805, 35408), (920, 30982), (1288, 22130), (1610, 17704), (1840, 15491), (2213, 12880), (2576, 11065), (3220, 8852), (4426, 6440)]