21216768

素因数分解:

$2^9\times 3^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:767

約数の個数: 80

約数和(自身を含む): 59579520

約数和(自身を除く): 38362752

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 32, 38, 48, 57, 64, 76, 96, 114, 128, 152, 192, 228, 256, 304, 384, 456, 512, 608, 727, 768, 912, 1216, 1454, 1536, 1824, 2181, 2432, 2908, 3648, 4362, 4864, 5816, 7296, 8724, 9728, 11632, 13813, 14592, 17448, 23264, 27626, 29184, 34896, 41439, 46528, 55252, 69792, 82878, 93056, 110504, 139584, 165756, 186112, 221008, 279168, 331512, 372224, 442016, 558336, 663024, 884032, 1116672, 1326048, 1768064, 2652096, 3536128, 5304192, 7072256, 10608384, 21216768]

約数ペア:

[(1, 21216768), (2, 10608384), (3, 7072256), (4, 5304192), (6, 3536128), (8, 2652096), (12, 1768064), (16, 1326048), (19, 1116672), (24, 884032), (32, 663024), (38, 558336), (48, 442016), (57, 372224), (64, 331512), (76, 279168), (96, 221008), (114, 186112), (128, 165756), (152, 139584), (192, 110504), (228, 93056), (256, 82878), (304, 69792), (384, 55252), (456, 46528), (512, 41439), (608, 34896), (727, 29184), (768, 27626), (912, 23264), (1216, 17448), (1454, 14592), (1536, 13813), (1824, 11632), (2181, 9728), (2432, 8724), (2908, 7296), (3648, 5816), (4362, 4864)]